How To Fix DT304 - Foreign key &-& (More foreign key fields than check table fields)

DT304 - Overview

• Message type: E = Error

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

• Message number: 304

• Message text: Foreign key &-& (More foreign key fields than check table fields)

What causes this issue?

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

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?

Check the definition of the foreign key and of the check table. The
superfluous foreign key fields are deleted during activation.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT304 - Foreign key &-& (More foreign key fields than check table fields) ?

  The SAP error message DT304 indicates that there is a mismatch between the number of foreign key fields defined in a table and the number of fields in the corresponding check table. This error typically arises during the definition of foreign key relationships in the Data Dictionary (DDIC) of SAP.
  
  Cause:
  The error occurs when:
  
  The foreign key relationship is defined with more fields than are present in the check table.
  The foreign key fields in the referencing table do not match the number of fields in the referenced check table.
  
  
  Solution:
  To resolve the DT304 error, you can follow these steps:
  
  
  Check Foreign Key Definition:
  
  Go to the Data Dictionary (transaction SE11).
  Locate the table that is causing the error.
  Check the foreign key relationship defined for that table.
  
  
  
  Verify Check Table:
  
  Identify the check table that the foreign key is referencing.
  Open the check table in SE11 and verify the number of fields it contains.
  
  
  
  Adjust Foreign Key Fields:
  
  If the foreign key