How To Fix DT302 - Foreign key &-& specification incomplete

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 302

• Message text: Foreign key &-& specification incomplete

What causes this issue?

The number of key fields in the check table is greater than the number
of foreign key fields defined.

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?

Specify the foreign key completely. If you do not want to check all the
key fields of the check table, you must set the 'generic' flag in the
foreign key maintenance routine for the corresponding field.
This state can also occur during transport and during a release upgrade
if the key of the check table was shortened. Although the foreign key
tables were adjusted, the old version of the check table could have
been used during activation because of the order of activation.
This state is automatically corrected as soon as the check table is
activated.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT302 - Foreign key &-& specification incomplete ?

  The SAP error message DT302, which states "Foreign key &-& specification incomplete," typically occurs when there is an issue with the foreign key relationship defined in the data dictionary (DDIC) of the SAP system. This error indicates that the foreign key definition is not complete or is missing some necessary components.
  Cause:
  
  Incomplete Foreign Key Definition: The foreign key relationship may not have been fully defined. This could be due to missing fields or incorrect references to the primary key table.
  Missing Table or Field: The table or field that is supposed to be referenced by the foreign key may not exist or may have been deleted.
  Data Dictionary Issues: There may be inconsistencies or errors in the data dictionary that need to be resolved.
  Transport Issues: If the foreign key was transported from another system, it may not have been transported correctly, leading to incomplete definitions.
  
  Solution:
  
  
  Check Foreign Key Definition:
  
  Go to the Data Dictionary (transaction SE11).
  Look for the table that is causing the error and check its foreign key definitions.
  Ensure that all necessary fields are included and that they correctly reference the primary key of the related table.
  
  
  
  Verify Related Tables:
  
  Ensure that the tables involved in the foreign key relationship exist and are active.
  Check that the fields being referenced are correctly defined in the related table.
  
  
  
  Recreate Foreign Key:
  
  If the foreign key definition is indeed incomplete, you may need to delete the existing foreign key and recreate it with the correct specifications.
  
  
  
  Transport Requests:
  
  If the issue arose after a transport, check the transport logs for any errors or warnings.
  Ensure that all necessary objects were included in the transport request.
  
  
  
  Check for Data Dictionary Consistency:
  
  Use transaction SE14 (Database Utility) to check for inconsistencies in the database and correct them if necessary.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific version of SAP you are using for any known issues or additional guidance.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SE11: Data Dictionary
  SE14: Database Utility
  SE80: Object Navigator (for checking related objects)
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to foreign key definitions.
  
  
  Debugging: If the error persists, consider debugging the program or transaction that is triggering the error to identify the exact point of failure.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the DT302 error in your SAP system.