How To Fix V50R055 - Internal error within BAPI interface: The interface ID is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: V50R - Extended Collective Processing for Delivery Creation

• Message number: 055

• Message text: Internal error within BAPI interface: The interface ID is not unique

What causes this issue?

Internal error in BAPI interface: interface ID not unique.
When creating deliveries for a preceding document from another system,
the request line identification in the <ZH>REQUEST</> segment of the
relevant BAPI interface is not unique.
A value in the REQUEST-ID field must only occur once in the entire
REQUEST table.
This must be ensured by the caller, since this must not be changed in
the BAPI. It must not be changed, because this ID is used to create a
link between the requested delivery item and the error log.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message V50R055 - Internal error within BAPI interface: The interface ID is not unique ?

  The SAP error message V50R055 indicates that there is an internal error within the BAPI (Business Application Programming Interface) interface, specifically stating that "The interface ID is not unique." This error typically arises when there are multiple BAPI interfaces with the same ID, which can lead to confusion in the system when trying to execute a BAPI call.
  Causes:
  
  Duplicate BAPI Interfaces: The most common cause is that there are multiple BAPI interfaces defined with the same ID in the system.
  Configuration Issues: Incorrect configuration or setup of BAPIs in the SAP system can lead to this error.
  Transport Issues: If BAPIs were transported from one system to another (e.g., from development to production), there might be conflicts or duplicates.
  Custom Development: Custom BAPIs created by developers may inadvertently use the same interface ID as standard BAPIs or other custom BAPIs.
  
  Solutions:
  
  
  Check for Duplicates:
  
  Use transaction code SE37 (Function Module) or SE80 (Object Navigator) to search for BAPIs with the same interface ID.
  Ensure that each BAPI has a unique interface ID.
  
  
  
  Review BAPI Definitions:
  
  Go through the BAPI definitions and check for any inconsistencies or duplicates.
  If duplicates are found, you may need to rename or remove the conflicting BAPI.
  
  
  
  Transport Management:
  
  If the issue arose after a transport, check the transport logs to see if any BAPIs were incorrectly transported.
  Ensure that the transport requests do not contain duplicates.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates that resolve known issues.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can debug the BAPI call to see where the error is being triggered and gather more context about the issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot resolve it, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error and the steps you have taken to troubleshoot.
  
  
  
  Related Information:
  
  BAPI Documentation: Familiarize yourself with the BAPI documentation available in the SAP Help Portal to understand how BAPIs are structured and how to manage them.
  Transaction Codes: Common transaction codes related to BAPIs include:
  
  SE37: Function Module
  SE80: Object Navigator
  SE11: Data Dictionary
  
  
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.