How To Fix RSODP_ABAP_CDS116 - Association &1 ignored: Field &2 is not an equal join to another field

SAP Error Message - Details

• Message type: E = Error

• Message class: RSODP_ABAP_CDS -

• Message number: 116

• Message text: Association &1 ignored: Field &2 is not an equal join to another field

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSODP_ABAP_CDS116 - Association &1 ignored: Field &2 is not an equal join to another field ?

  The SAP error message RSODP_ABAP_CDS116 indicates that there is an issue with the way associations are defined in a Core Data Services (CDS) view. Specifically, the error states that an association is being ignored because the join condition is not an "equal join" between the specified fields.
  Cause:
  This error typically arises when:
  
  Non-Equal Join Condition: The association defined in the CDS view is based on fields that do not have an equal relationship. For example, if you are trying to join two tables on fields that do not match exactly (e.g., using > or < instead of =), this error will occur.
  Incorrect Association Definition: The association might be incorrectly defined in the CDS view, leading to a mismatch in the expected join conditions.
  Data Model Issues: There may be issues in the underlying data model that prevent a proper association from being established.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Association Definition:
  
  Review the CDS view definition and ensure that the association is defined correctly. The join condition should use an equal operator (=) between the fields.
  Example of a correct association:
  define association to AnotherEntity as _AnotherEntity
    on $projection.Field1 = _AnotherEntity.Field2
  
  
  
  
  Modify the Join Condition:
  
  If the join condition is not an equal join, modify it to ensure that it uses the equal operator. If the business logic requires a different type of join, consider using a different approach or restructuring the data model.
  
  
  
  Review Data Model:
  
  Ensure that the fields being joined are appropriate for the association. Check the data types and cardinality of the fields involved in the join.
  
  
  
  Test the CDS View:
  
  After making changes, activate the CDS view and test it to ensure that the error is resolved and that the data is being retrieved as expected.
  
  
  
  Consult Documentation:
  
  If you are unsure about the correct way to define associations in CDS views, refer to the official SAP documentation or guides on Core Data Services.
  
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. It allows for the creation of views that can be consumed by various applications.
  Associations: In CDS, associations are used to define relationships between entities. They are similar to foreign key relationships in traditional database design.
  SAP Notes: Check for any relevant SAP Notes or Knowledge Base Articles that may provide additional insights or solutions related to this error message.
  
  By following these steps, you should be able to identify and resolve the issue causing the RSODP_ABAP_CDS116 error in your SAP environment.