How To Fix AD290 - &-& (foreign key definition cannot be specified in full)

AD290 - Overview

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 290

• Message text: &-& (foreign key definition cannot be specified in full)

What causes this issue?

It is not possible to create the foreign key definition, since all key
fields in the value table (primary key fields) would have to be
assigned to foreign key fields (fields to be checked from the table
itself or possibly from another table). In this case, the assignment
would be via the common domain of the field pairs.

System Response

The system attempted to create a default value for this assignment, but
the corresponding fields from the table to be checked could not be
assigned to all the primary key fields.

How to fix this error?

To be able to activate a relationship, the assignment of primary and
foreign key fields must be complete. Any missing fields must be dealt
with manually afterwards in such a way that the fields to be checked
can come not only from the table itself but also from another table. If
an assignment is not possible, the data design of this table must be
re-examined.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD290 - &-& (foreign key definition cannot be specified in full) ?

  The SAP error message AD290 indicates that there is an issue with the foreign key definition in a database table. Specifically, the error message states that a foreign key definition cannot be specified in full. This typically occurs when you are trying to create or modify a table in the Data Dictionary (SE11) and there is a problem with the foreign key relationship you are trying to establish.
  
  Cause:
  
  Incorrect Foreign Key Definition: The foreign key you are trying to define may not match the primary key of the referenced table. This can happen if the data types or lengths of the fields do not match.
  Non-Existent Table: The table you are trying to reference in the foreign key does not exist or is not activated.
  Field Mismatch: The fields specified in the foreign key do not correspond correctly to the fields in the referenced table.
  Composite Keys: If you are trying to create a