How To Fix /UI5/MP_CA_APP012 - Outbound with id &1 already exists in base descriptor

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI5/MP_CA_APP -

• Message number: 012

• Message text: Outbound with id &1 already exists in base descriptor

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI5/MP_CA_APP012 - Outbound with id &1 already exists in base descriptor ?

  The SAP error message /UI5/MP_CA_APP012 Outbound with id &1 already exists in base descriptor typically occurs in the context of SAP Fiori or SAPUI5 applications when there is a conflict with the outbound configuration in the application descriptor. This error indicates that there is an attempt to create or register an outbound configuration with an ID that already exists in the base descriptor.
  Cause:
  
  Duplicate Outbound Configuration: The most common cause of this error is that there is already an outbound configuration defined with the same ID in the application descriptor (manifest.json or similar configuration files).
  Incorrect Merging of Descriptors: If multiple descriptors are being merged (for example, during the deployment of an application), and they contain the same outbound ID, this error can occur.
  Development Environment Issues: Sometimes, issues in the development environment or incorrect versioning can lead to this error.
  
  Solution:
  
  
  Check the Outbound Configuration:
  
  Open the application descriptor file (usually manifest.json).
  Look for the sap.app section and check the outbound configurations.
  Ensure that each outbound ID is unique. If you find duplicates, rename or remove the conflicting outbound ID.
  
  
  
  Clear Cache:
  
  If you have made changes to the application descriptor, clear the browser cache or the SAP Fiori launchpad cache to ensure that the latest version is being used.
  
  
  
  Check for Merging Issues:
  
  If your application is part of a larger project or is being merged with other applications, ensure that there are no conflicting outbound configurations in the other descriptors.
  
  
  
  Review Deployment Process:
  
  If this error occurs during deployment, review the deployment process to ensure that the application is being deployed correctly without conflicts.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation for guidelines on configuring outbound settings in SAP Fiori applications.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other developers have encountered and resolved similar issues.
  Version Control: If you are using version control (like Git), check the history of changes to the manifest file to identify when the duplicate entry was introduced.
  
  By following these steps, you should be able to resolve the error and ensure that your SAPUI5 application runs smoothly.