How To Fix AD288 - Foreign key &-& (foreign key not defined)

AD288 - Overview

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 288

• Message text: Foreign key &-& (foreign key not defined)

What causes this issue?

A field defined for a table points to a domain which has a value
table. A foreign key has not been maintained for this field.

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?

You can, but do not have to, maintain the foreign key.

Error message extract from SAP system. Copyright SAP SE.

AD288 - Details

• The SAP error message AD288, which states "Foreign key &-& (foreign key not defined)," typically occurs when there is an attempt to use a foreign key relationship in a database table that has not been properly defined in the Data Dictionary (DDIC). This error can arise in various contexts, such as during data entry, report generation, or when executing certain transactions.
  
  Cause:
  
  Missing Foreign Key Definition: The foreign key relationship that is being referenced does not exist in the Data Dictionary. This could be due to a missing entry in the foreign key table or an incorrect configuration.
  Incorrect Table/Field Reference: The table or field being referenced may not be correctly specified, leading to the system being unable to find the foreign key relationship.
  Transport Issues: If the foreign key definition was recently transported from another system, it may not have been included or may not have been activated properly.
  Custom Development: If there are