How To Fix E2454 - Parameter field & is foreign key field in join condition to be built

SAP Error Message - Details

• Message type: E = Error

• Message class: E2 - DE Data Dictionary

• Message number: 454

• Message text: Parameter field & is foreign key field in join condition to be built

What causes this issue?

The parameter field is a foreign key field of a join condition that
builds the edited lock object and therefore belongs to a
different lock parameter.

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 E2454 - Parameter field & is foreign key field in join condition to be built ?

  The SAP error message E2454 indicates that there is an issue with a parameter field being used in a join condition within a query or report. Specifically, it suggests that the parameter field is a foreign key field, and the system is unable to build the join condition properly due to this.
  Cause:
  
  Foreign Key Relationship: The parameter field you are trying to use in the join condition is defined as a foreign key in the database. This means it is expected to reference a primary key in another table.
  Join Condition Issues: The join condition may not be correctly defined, or the foreign key field may not be compatible with the primary key it is supposed to reference.
  Data Model Issues: There may be issues with the data model or the way the tables are related, leading to ambiguity or conflicts in the join conditions.
  
  Solution:
  
  Check Foreign Key Definition: Verify the foreign key definition in the database. Ensure that the foreign key field is correctly set up to reference the appropriate primary key in the related table.
  Review Join Conditions: Examine the join conditions in your query or report. Make sure that the join is correctly defined and that the fields being joined are compatible.
  Adjust Parameter Field: If the parameter field is not intended to be a foreign key, consider adjusting its definition or usage in the query.
  Use Correct Data Types: Ensure that the data types of the fields being joined are compatible. Mismatched data types can lead to join issues.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on handling foreign key fields in join conditions.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Data Dictionary: Use the Data Dictionary (SE11) to review the table definitions and relationships.
  Debugging: If you have access to debugging tools, you can trace the execution of the query to identify where the join condition is failing.
  Community Forums: Consider reaching out to SAP community forums or support for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the E2454 error and successfully build your join condition.