How To Fix MC719 - Foreign key &-& (transitive reference to external field)

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 719

• Message text: Foreign key &-& (transitive reference to external field)

What causes this issue?

The foreign key field of a foreign key to be used for a join is a field
which is not included in the foreign key table. The table from which
the foreign key field comes, however, is one of the base tables
of the view. This constellation is permitted for database
views, but not for maintenance views.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC719 - Foreign key &-& (transitive reference to external field) ?

  The SAP error message MC719, which states "Foreign key &-& (transitive reference to external field)," typically occurs in the context of data consistency checks in SAP, particularly when dealing with master data or transactional data that involves foreign key relationships.
  Cause:
  The error arises when there is a violation of foreign key constraints in the database. This can happen due to several reasons, including:
  
  Missing Data: The foreign key field in the table is referencing a value that does not exist in the related table.
  Incorrect Configuration: The foreign key relationship may not be correctly defined in the data dictionary (DDIC).
  Transitive Reference: The error message indicates that there is a transitive reference to an external field, meaning that the foreign key relationship is not direct and involves multiple tables, leading to a situation where the reference cannot be resolved.
  Data Inconsistency: There may be inconsistencies in the data due to manual entries or data migration processes.
  
  Solution:
  To resolve the MC719 error, you can follow these steps:
  
  
  Check Foreign Key Relationships:
  
  Verify the foreign key relationships in the data dictionary (transaction SE11) to ensure they are correctly defined.
  Ensure that the foreign key fields in your table are pointing to valid entries in the referenced table.
  
  
  
  Data Validation:
  
  Check the data in the relevant tables to ensure that all foreign key references are valid. You can use SQL queries or transaction codes like SE16 or SE16N to inspect the data.
  Look for any orphaned records that may not have corresponding entries in the referenced tables.
  
  
  
  Correct Data Entries:
  
  If you find any missing or incorrect entries, update the data accordingly to ensure that all foreign key constraints are satisfied.
  
  
  
  Review Transitive References:
  
  If the error involves transitive references, review the relationships between the tables involved. Ensure that all necessary links are established and that there are no broken chains of references.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance related to the tables and fields involved in the error.
  
  
  
  Testing:
  
  After making corrections, test the process again to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE16/SE16N (Data Browser), and SE14 (Database Utility) can be useful for checking and managing database tables and relationships.
  SAP Notes: Check SAP Notes for any known issues or patches related to the MC719 error. You can search for relevant notes in the SAP Support Portal.
  Debugging: If the issue persists, consider debugging the program or transaction that triggers the error to identify the exact point of failure.
  
  By following these steps, you should be able to identify and resolve the cause of the MC719 error in your SAP system.