How To Fix WES_OUTBOUND043 - Structure &1 is already in use at filter &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WES_OUTBOUND - Messages for Outbound Services

• Message number: 043

• Message text: Structure &1 is already in use at filter &2

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 WES_OUTBOUND043 - Structure &1 is already in use at filter &2 ?

  The SAP error message:
  WES_OUTBOUND043: Structure &1 is already in use at filter &2
  Meaning / Cause:
  This error occurs in the context of SAP PI/PO (Process Integration / Process Orchestration) or SAP middleware when you try to assign or reuse a data structure (e.g., a message type, data type, or structure) in an outbound interface or mapping, but the structure is already assigned or locked by another filter or configuration.
  More specifically, the message indicates that the structure (represented by placeholder &1) is already assigned or in use at a particular filter (represented by &2). This typically happens when:
  
  You try to assign the same structure to multiple filters or interfaces where it is not allowed.
  There is a conflict in the configuration of the outbound interface or message mapping.
  The structure is locked or reserved by another process or configuration.
  
  Where it occurs:
  
  In SAP PI/PO during configuration of Integration Directory objects.
  When defining or modifying outbound interfaces or filters.
  During message mapping or interface determination steps.
  
  Solution:
  
  
  Check the filter assignment:
  
  Go to the Integration Directory.
  Check the outbound interface or communication channel where the structure is assigned.
  Verify if the structure is already assigned to another filter or interface.
  If yes, you need to either:
  
  Remove the duplicate assignment.
  Use a different structure or message type for the new filter.
  
  
  
  
  
  Review interface and mapping configuration:
  
  Ensure that the structure is not being reused in a way that is not supported.
  If you need to use the same structure in multiple places, check if the system allows it or if you need to create copies or variants.
  
  
  
  Check for locks or inconsistencies:
  
  Sometimes, the structure might be locked due to incomplete transport or configuration.
  Try to refresh or re-import the objects.
  Check for transport requests that might be holding the structure.
  
  
  
  Consult SAP Notes:
  
  Search SAP Support Portal for notes related to WES_OUTBOUND043.
  Sometimes, patches or updates fix issues related to structure assignment.
  
  
  
  Additional Information:
  
  The placeholders &1 and &2 in the message will be replaced by the actual structure name and filter name respectively, which helps identify exactly which structure and filter are involved.
  This error is related to the design-time configuration in SAP PI/PO and not a runtime error.
  Proper naming conventions and clear interface design can help avoid such conflicts.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Structure already assigned/used in another filter or interface, causing conflict.
  
  
  Solution
  Check and remove duplicate assignments; use different structures if needed; refresh config.
  
  
  Where
  SAP PI/PO Integration Directory during outbound interface/filter configuration.
  
  
  Related info
  Check SAP Notes, ensure no locks or transport issues, verify interface design.
  
  
  
  If you provide the actual structure and filter names from the message, I can help you with more specific guidance.