--- title: "Boundary Message Event" slug: "boundary-message-event" updated: 2025-12-06T01:37:37Z published: 2025-12-06T01:37:37Z canonical: "docs.processmaker.com/boundary-message-event" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.processmaker.com/llms.txt > Use this file to discover all available pages before exploring further. # Boundary Message Event A Boundary Message Event object represents alternate workflow routing when its associating object or connector receives a specific message as designated by the message's name. The associating object/connector must have triggered at the moment it receives the message. The Boundary Message Event object may associate with any of the following objects or connectors: - [Form Task](/v1/docs/form-task) object - [Script Task](/v1/docs/script-task#add-a-script-task-element) object - [Manual Task](/v1/docs/manual-task#add-a-manual-task-element) object - [Sub Process](/v1/docs/sub-process#add-a-sub-process-element) object - [Actions By Email](/v1/docs/actions-by-email-connector) connector - [Data Connector](/v1/docs/data-connector) connector - [DocuSign](/v1/docs/docusign-connector) connector - [IDP](/v1/docs/idp-connector) connector - [PDF Generator](/v1/docs/pdf-generator-connector) - [Send Email](/v1/docs/send-email-connector) connector The Boundary Message Event object associates with an object or connector by attaching to it to that object or connector. Below a Boundary Message Event object associates with a Sub Process object. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/574cd7de-2a76-465c-804c-9cffcab7d277.png) Boundary Message Event object associates with a Sub Process object During an in-progress Request, the Boundary Message Event object may trigger in the following circumstances: 1. The Boundary Message Event object associates with an object or connector. 2. The Boundary Message Event object receives a specified message, designated by the message's unique name, prior to the associating object/connector triggering or completing. 3. The Boundary Message Event object triggers. Either of the following may occur depending on if the Boundary Message Event object is configured to be "interrupting" or "non-interrupting": - **Interrupting:** If the Boundary Message Event object is configured to be interrupting, its associating object/connector never triggers in that Request. Workflow routes through the Boundary Message Event object. - **Non-interrupting:** If the Boundary Message Event object is configured to be non-interrupting, the associating object/connector may potentially trigger in that Request if workflow routes to it. However, the Boundary Message Event object triggers when it receives its message, which may be temporally a different time than when the associating object/connector may trigger. If the associating object/connector triggers and completes, workflow routes through it. Both workflows may possible occur. Use an outgoing Sequence Flow object to indicate workflow routing from the Boundary Message Event object if it triggers. Use a Boundary Message Event object to design business solutions that adjust workflow routing from the best-case scenario. Consider these examples: - **Boundary Message Event object receives message from another Pool object:** Use an Intermediate Message Throw Event object that is in one Pool object to send a message to a Boundary Message Event object in a second Pool object. Each Pool object contains independent workflow: each is a separate Request. The Boundary Message Event object receives Request data from the Intermediate Message Throw Event object's Request. The Boundary Message Event object's Request resumes with Request data from the other Request. - **Two objects listen for different messages:** Associate a Boundary Message Event object with an Intermediate Message Catch Event object. Each of these objects listen for a different message, thereby providing two workflow routing options from this junction in the Process model. An object or connector associated with a Boundary Message Event object may also associate with the following objects in the same object/connector: - [Boundary Timer Event](/v1/docs/boundary-timer-event) object - [Boundary Error Event](/v1/docs/process-modeling-object-descriptions#boundary-error-event) object - [Boundary Signal Event](/v1/docs/boundary-signal-event) object - [Boundary Conditional Event](/v1/docs/boundary-conditional-event) object Configure whether a Boundary Message Event object interrupts the best-case scenario workflow: - **Interrupting workflow:** When workflow routes through the Boundary Message Event object, workflow is interrupted and does not route through the best-case scenario. As highlighted in the example below, workflow routes through the Boundary Message Event object if that object receives a message from the child Request. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/e3408e5b-96e6-4a2d-8d55-9ba003aa2350.png) - **Non-interrupting workflow:** Workflow routes both through the Boundary Message Event object and the best-case scenario, thereby creating parallel workflow in that Request. As highlighted in the example below, workflow routes through the Boundary Message Event object if that object receives a message from the child Request; however, after the child Request completes and workflow resumes in the parent Request, the Sub Process object completes and routes through the best-case scenario. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/967afba2-6f8e-469f-9c5a-bdd1b1489bad.png) Processes that use Boundary Message Event objects can be complex. Therefore, use it to test workflow variations while designing such Processes. --- ## Add a Boundary Message Event to the Process Model **Permissions** - Processes: Edit Processes - Processes: View Processes See the [Process](/v1/docs/permission-descriptions-for-users-and-groups#processes) permissions or ask your Administrator for assistance. Your user account or group membership must have the following permissions to configure a Boundary Message Event object in the Process model unless your user account has the **Make this user a Super Admin** setting selected: Processes: Edit Processes Processes: View Processes See the [Process](/v1/docs/permission-descriptions-for-users-and-groups#processes) permissions or ask your Administrator for assistance. Follow these steps to add a Boundary Message Event object to the Process model: 1. [View your Processes](/v1/docs/view-edit-and-search-for-processes#view-all-active-processes). The **Processes** page displays. 2. [Create a new Process](/v1/docs/create-a-process) or click the **Open Modeler** icon ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/2231322a-5193-4c54-a431-b32fa7585632.png) to edit the selected Process model. Process Modeler displays. 3. Add the following Process model object or connector to your Process model in which to associate with the Boundary Error Event object: 1. [Form Task](/v1/docs/form-task) 2. [Manual Task](/v1/docs/manual-task#add-a-manual-task-element) 3. [Script Task](/v1/docs/script-task#add-a-script-task-element) 4. [Sub Process](/v1/docs/sub-process#add-a-sub-process-element) 5. [Actions By Email](/v1/docs/actions-by-email-connector) connector 6. [Data Connector](/v1/docs/data-connector) connector 7. [DocuSign](/v1/docs/docusign-connector) connector 8. [IDP](/v1/docs/idp-connector) connector 9. [PDF Generator](/v1/docs/pdf-generator-connector) connector 10. [Send Email](/v1/docs/send-email-connector) connector 4. From the **Boundary Events** drop-down menu, select the **Boundary Message Event** option. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/f8b13dfe-554b-4e0b-b745-9566fff42b2f.png) The Boundary Message Event object displays on the top of its associating object/connector. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/bd6fb1cf-3262-41ff-a634-a8d366284d68.png) **Adjust location and appearance** - [Move a Process Model Object.](/v1/docs/process-modeler#move-process-model-objects) - [Connect Two Process Model Objects with a Sequence Flow Element.](/v1/docs/sequence-flow-element#connect-two-process-model-objects-with-a-sequence-flow-element) - [Customize the Appearance of a Process Model Object.](/v1/docs/customize-the-appearance-of-a-process-model-object) - [Copy Process Model Objects into the Clipboard.](/v1/docs/process-modeler#copy-process-model-objects-into-the-clipboard) - [Clone Process Model Objects Without the Clipboard.](/v1/docs/process-modeler#clone-process-model-objects) - [Delete Process Model Objects.](/v1/docs/process-modeler#delete-process-model-objects) --- ## Settings The Boundary Message Event object has the following panels that contain settings: - [**Configuration**](/v1/docs/boundary-message-event#configuration-panel-settings) panel - [**Documentation**](/v1/docs/boundary-message-event#documentation-panel-settings) panel - [**Advanced**](/v1/docs/boundary-message-event#advanced-panel-settings) panel --- ### Configuration Panel Settings The Boundary Message Event object has the following settings in the **Properties** panel: #### Edit the Object Name An object name is a human-readable reference for a Process object. Process Modeler automatically assigns the name of a Process object with its object type. However, an object's name can be changed. Follow these steps to edit the name for a Boundary Message Event object: 1. Select the Boundary Message Event object from the Process model in which to edit its name. 2. Ensure that the **Configuration** panel displays. If not, [show it](/v1/docs/show-configuration-settings-for-a-process-model-object). The **Name** setting displays. This is a required setting. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/854e47da-3034-4011-be8f-e9506a073bcd.png) 3. In the **Name** setting, edit the selected object's name and then press **Enter**. #### Indicate to Interrupt the Best-Case Scenario Workflow Indicate whether the Boundary Message Event object interrupts the best-case scenario workflow: - **Interrupting workflow:** When workflow routes through the Boundary Message Event object, workflow is interrupted and does not route through the best-case scenario. As highlighted in the example below, workflow routes through the Boundary Message Event object if that object receives a message from the child Request. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/3bf4f2b7-1553-44ea-880d-9b5d18bdb900.png) - **Non-interrupting workflow:** Workflow routes both through the Boundary Message Event object and the best-case scenario, thereby creating parallel workflow in that Request. As highlighted in the example below, workflow routes through the Boundary Message Event object if that object receives a message from the child Request; however, after the child Request completes and workflow resumes in the parent Request, the Sub Process object completes and routes through the best-case scenario. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/404e3956-77c6-4b10-bb90-4401609cef85.png) Follow these steps to indicate if this Boundary Message Event object interrupts the best-case scenario workflow when it triggers: 1. Select the Boundary Message Event object from the Process model in which to indicate if it interrupts the best-case scenario workflow. 2. Ensure that the **Configuration** panel displays. If not, [show it](/v1/docs/show-configuration-settings-for-a-process-model-object). Panels to configure this object display. 3. Expand the **Configuration** panel if it is not presently expanded, and then locate the **Interrupting** setting. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/b4d0336e-ddb9-4099-b643-4490cb336d11.png) 4. From the **Interrupting** checkbox, indicate whether this Boundary Message Event object interrupts the best-case scenario workflow when it triggers. When the **Interrupting** checkbox is selected, which is the default setting, this object interrupts the best-case scenario workflow. --- ### Documentation Panel Settings Describe the object's purpose and how it functions in the Process. This description does not affect Requests for the Process, but may be useful for Process model maintenance such as how the object is configured. Edit information by using the What-You-See-Is-What-You-Get (WYSIWYG) rich text editor. A Process's entered documentation displays by selecting the [**View Documentation** icon for that Process](/v1/docs/view-documentation-for-a-process). #### Edit the Object's Description Displayed in Process Documentation Follow these steps to edit the description for an object: 1. Select the object from the Process model in which to edit its description. 2. Ensure that the **Configuration** panel displays. If not, [show it](/v1/docs/show-configuration-settings-for-a-process-model-object). Panels to configure this object display. 3. Expand the **Documentation** panel if it is not presently expanded. The **Description** setting displays. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/657725eb-2953-4a4d-85ac-ad4578001a84.png) 4. In the **Description** setting, edit the information to display when viewing documentation for this object and then press **Enter**. Alternatively, use the What-You-See-Is-What-You-Get (WYSIWYG) rich text editor to stylize your text by clicking the **More** icon![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/00919a0d-5379-48f6-a56f-39a502a0ae3c.png). ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/c121b038-eaed-4397-8fb0-f9bafbeb06c4.png) Follow these guidelines to use the WYSIWYG rich text editor to stylize your text: - **Undo changes:** Click on the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/3279f874-1ccf-45bc-8875-91bc913cf66b.png)icon to undo the last action. - **Redo changes:** Click on the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/d835c043-9523-4b90-b88c-6e35e44390cc.png)icon to redo the last undone action. - **Insert/Edit Link**: Click on the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/74741c9d-39a6-4088-9f67-4bedfffca996.png)icon to convert the selected text into a hyperlink. Follow these steps to create a hyperlink: 1. Select the required text from the Rich Text control. 2. Click on the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/74741c9d-39a6-4088-9f67-4bedfffca996.png)icon. The **Insert/Edit Link** screen displays. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/5841388b-0639-48bf-8240-10c19c061b17.png) 3. In the **URL** setting, enter the destination URL. 4. In the **Text to display** setting, edit or enter the text displayed in the Rich Text control. 5. In the **Title** setting, enter the text to display when a user hovers over the displayed text. 6. From **Open link in…** drop-down menu, select one of these options: - **New window**: Select this option to open the destination page in a new browser window. - **Current window**: Select this option to open the destination page in the current browser window. - **Insert/Edit Image:** Click on the **Insert/Edit Image** icon![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/2fb494c3-3f28-407c-ba28-58f60045deb4.png)to insert an image. Follow these guidelines: 1. Click on the **Insert/Edit Image** icon![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/2fb494c3-3f28-407c-ba28-58f60045deb4.png). 2. The **Insert/Edit Image** screen displays: ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/a71d3eb8-24d7-4f07-80a0-23dcd4864da9.png) 3. In the **Source** setting, enter a URL for the image. 4. In the **Alternative Description** setting, enter the text to display if the source URL of the image is not accessible. 5. In the **Width** setting, enter the maximum width for the image. 6. In the **Height** setting, enter the maximum height for the image. 7. Toggle the **Constrain Proportions** icon![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/de75dbf5-eb39-4894-8e60-d88118d7b259.png)to maintain the width-height ratio of the image to its original proportion. 8. Click **Save**. - **Insert Page Break for PDF:** Click on the **Insert Page Break for PDF** icon![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/4f35e539-d907-42d4-a537-c47bd07d434f.png)to insert a page break when a PDF document is created for this documentation if your browser supports this feature. - **Format text**: Follow these guidelines to format text: - **Headings**: From the **Paragraph/Formats** menu, select **Headings** and then select a heading size. - **Bold:** Do one of the following: - From the editor toolbar, select the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/eae31d81-79b8-4cd5-b095-3a7099f2e3dc.png)icon. - From the **Paragraph/Formats** menu, select **Inline** and then **Bold**. - **Italics:** Do one of the following: - From the editor toolbar, select the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/9d487c73-21e4-4789-8962-073d0300dcbc.png)icon. - From the **Paragraph/Formats** menu, select **Inline** and then **Italic**. - **Underline**: From the **Paragraph/Formats** menu, select **Inline** and then **Underline**. - **Strikethrough**: From the **Paragraph/Formats** menu, select **Inline** and then **Strikethrough**. - **Superscript**: From the **Paragraph/** **Formats** menu, select **Inline** and then **Superscript**. - **Subscript**: From the **Paragraph/Formats** menu, select **Inline** and then **Subscript**. - **Code**: From the **Paragraph/Formats** menu, select Inline and then **Code**. - **Paragraph**: From the **Paragraph/Formats** menu, select **Blocks** and then **Paragraph**. - **Blockquote**: From the **Paragraph/Formats** menu, select **Blocks** and then **Blockquote**. - **Division**: From the **Paragraph/Formats** menu, select **Blocks** and then **Div**. - **Preformatted**: From the **Paragraph/Formats** menu, select **Blocks** and then **Pre**. - **Change text color**: Use the **Text Color** drop-down to change text color. Click on the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/222a6e51-40fc-4cda-bf82-504243a83585.png)icon. The color palette displays. Do one of the following: - Select one of the color swatches from the color palette. The selected text changes to that color. - Click the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/79205965-c3bd-4a11-b38f-7a508da4871f.png)icon to select a custom color from the **Color Picker**. - Click the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/5e9ccaf6-b196-4478-a02d-f5fd831e41c1.png)icon to reset the text to its default color. - **Align text**: Follow these guidelines to align text: - **Left align:** Do one of the following: - From the editor toolbar, use the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/29d2e446-d5b2-4b03-8be2-8c881acfe8fa.png)icon to left-align text. - From the **Paragraph/Formats** menu, select **Align** and then **Left**. - **Center align:** Do one of the following: - From the editor toolbar, use the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/936e295b-e231-4095-babd-47c7cfcd73df.png)icon to center-align text. - From the **Paragraph/Formats** menu, select **Align** and then **Center**. - **Right align**: Do one of the following: - From the editor toolbar, use the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/71d2fbc3-bfe9-4712-a9af-4d212cb33b99.png)icon to right-align text. - From the **Paragraph/Formats** menu, select **Align** and then **Right**. - **Justify**: Do one of the following: - From the editor toolbar, use the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/9be5f6e3-2e75-46bc-971b-c633802f802a.png)icon to justify text. - From the **Paragraph/Formats** menu, select **Align** and then **Justify**. - **Insert a bullet list**: Use the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/c3975f54-9631-4cdf-8154-beb173fdc50a.png)icon to format text as a bulleted list. - **Insert a numbered list:** Use the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/38bdd0df-573f-468e-a316-f6847b41fa03.png)icon to format text as a numbered list. - **Indent text**: Click on the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/873bec39-3569-4344-802d-c8bfd1076806.png)icon to increase text indenting. - **Outdent text:** Click on the![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/a7568922-1a5a-4969-a769-1e9586f2ebf8.png)icon to decrease text indenting. --- ### Advanced Panel Settings #### Edit the Node's Identifier Value Process Modeler automatically assigns a unique value to each Process node added to a Process model. However, a node's identifier value can be changed if it is unique to all other nodes in the Process model, including the Process model's identifier value. > [!WARNING] > All identifier values for all nodes in the Process model must be unique. Follow these steps to edit the identifier value for a Boundary Message Event object: 1. Select the Boundary Message Event object from the Process model in which to edit its identifier value. 2. Ensure that the **Configuration** panel displays. If not, [show it](/v1/docs/show-configuration-settings-for-a-process-model-object). Panels to configure this object display. 3. Expand the **Advanced** panel if it is not presently expanded. The **Node Identifier** setting displays. This is a required setting. ![](https://cdn.document360.io/2d311614-fcb7-4424-8b4c-d4d3091eebeb/Images/Documentation/2e6de61d-a7f7-48a3-a7eb-fa32ff58aecd.png) 4. In the **Node Identifier** setting, edit the Boundary Message Event object's identifier to a unique value from all nodes in the Process model and then press **Enter**.