How To Fix AD291 - Foreign key &-& (foreign key field & & does not exist)

AD291 - Overview

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 291

• Message text: Foreign key &-& (foreign key field & & does not exist)

What causes this issue?

The foreign key defined for this field is incorrect. One of the
assigned foreign key fields is not in the table.

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?

When defining foreign keys, enter only fields which exist in the tables
involved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD291 - Foreign key &-& (foreign key field & & does not exist) ?

  The SAP error message AD291 indicates that there is a foreign key constraint issue in your database. Specifically, it means that the foreign key field specified in the error message does not exist in the database table you are trying to work with. This can occur during various operations, such as data entry, table maintenance, or when executing certain transactions.
  
  Cause:
  
  Missing Field: The foreign key field referenced in the error message does not exist in the specified table. This could be due to a typo, a change in the database schema, or an incorrect configuration.
  Table Structure Changes: If the database schema has been modified (e.g., fields added or removed) and the foreign key constraints were not updated accordingly, this error can occur.
  Incorrect Data Model: The data model may not be correctly defined, leading to references to non-existent fields.
  Transport Issues: If the changes were transported from one system to another (e.g., from