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

MC719 - Overview

• 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.

MC719 - Details

• 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