How To Fix SADL_EXPOSURE080 - Recursive definition of association &1, element '$$projection.&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_EXPOSURE - Errors During Exposure Compilation

• Message number: 080

• Message text: Recursive definition of association &1, element '$$projection.&2'

What causes this issue?

CDS view defines association &V1& using projected element &V2& in the
ON-condition. The projected element &V2& is based on a path expression,
which follows the association &V1&.

System Response

Recursive definition of association and element is not allowed.

How to fix this error?

Use target expression '&V1&.&V3&&V4&' instead of '$projection.&V2&' in
the ON-condition

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_EXPOSURE080 - Recursive definition of association &1, element '$$projection.&2' ?

  The SAP error message SADL_EXPOSURE080 indicates that there is a recursive definition of an association in your SAP Data Access Layer (SADL) model. This typically occurs when an association is defined in such a way that it references itself directly or indirectly, leading to a circular reference.
  Cause:
  
  Recursive Association: The most common cause is that an association in your data model is defined to point back to itself, either directly or through another association.
  Incorrect Model Design: The data model may not be designed correctly, leading to unintended recursive relationships.
  Projection Issues: The error message mentions $$projection, which suggests that the issue may arise from how projections are defined in your model, potentially leading to recursive references.
  
  Solution:
  
  Review Associations: Check the associations defined in your data model. Look for any associations that may be pointing back to the same entity or through another entity that eventually leads back to the original entity.
  Modify Associations: If you find a recursive association, you will need to modify it. This could involve:
  
  Removing the recursive association.
  Redefining the association to avoid circular references.
  Ensuring that associations are only defined where necessary and do not create loops.
  
  
  Check Projections: If you are using projections, ensure that they are correctly defined and do not inadvertently create recursive paths.
  Testing: After making changes, test the model to ensure that the error is resolved and that the associations work as intended.
  
  Related Information:
  
  Documentation: Refer to SAP documentation on SADL and data modeling best practices to understand how to properly define associations and projections.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Debugging Tools: Use SAP's debugging tools to trace the execution and identify where the recursive definition is being triggered.
  
  By carefully reviewing and adjusting your data model, you should be able to resolve the SADL_EXPOSURE080 error.