How To Fix DMCLG515 - Foreign key '&1' of structure &2 maintained differently in &3 and &4

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 515

• Message text: Foreign key '&1' of structure &2 maintained differently in &3 and &4

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG515 - Foreign key '&1' of structure &2 maintained differently in &3 and &4 ?

  The SAP error message DMCLG515 indicates that there is a discrepancy in the foreign key definition of a structure between two different systems or environments. This typically occurs during data migration, system upgrades, or when synchronizing configurations between different SAP systems (e.g., development, quality assurance, and production).
  Cause:
  The error message DMCLG515 is triggered when:
  
  The foreign key relationship for a specific field (denoted as &1) in a structure (denoted as &2) is defined differently in two systems (denoted as &3 and &4).
  This could be due to differences in the data dictionary definitions, such as changes made in one system that have not been replicated in the other.
  It may also occur if there are inconsistencies in the underlying database tables or if the foreign key constraints are not aligned.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify the Structures and Foreign Keys:
  
  Check the details provided in the error message to identify the specific foreign key (&1), the structure (&2), and the systems (&3 and &4) involved.
  
  
  
  Compare Definitions:
  
  Use transaction codes like SE11 (Data Dictionary) to compare the foreign key definitions in both systems.
  Look for differences in the foreign key constraints, such as the referenced table, fields, or any additional conditions.
  
  
  
  Synchronize Definitions:
  
  If you find discrepancies, you will need to update the foreign key definition in one of the systems to match the other.
  This may involve modifying the data dictionary objects in the development system and transporting the changes to the other systems.
  
  
  
  Check Transport Requests:
  
  Ensure that all relevant transport requests have been properly imported into the target system. Sometimes, missing transports can lead to such discrepancies.
  
  
  
  Testing:
  
  After making the necessary changes, perform tests to ensure that the foreign key relationships are functioning correctly and that the error no longer occurs.
  
  
  
  Documentation:
  
  Document any changes made to the foreign key definitions for future reference and to maintain consistency across systems.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE14 (Database Utility), SE03 (Transport Organizer), SE09 (Transport Organizer).
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to this error message.
  Data Migration: If this error occurs during data migration, ensure that the migration process is correctly mapping foreign keys and that the target system's structure is aligned with the source system.
  
  By following these steps, you should be able to resolve the DMCLG515 error and ensure that the foreign key definitions are consistent across the systems involved.