How To Fix AD578 - &-& (enter constant part of foreign key correctly)

AD578 - Overview

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 578

• Message text: &-& (enter constant part of foreign key correctly)

What causes this issue?

If constants are used in foreign keys, they must be defined in the
input field in the foreign key table in the form '<const>'.

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?

The closing <LB>'</> character is probably missing. Please correct.

Error message extract from SAP system. Copyright SAP SE.

AD578 - Details

• The SAP error message AD578, which states "Enter constant part of foreign key correctly," typically occurs when there is an issue with the foreign key relationship in a database table or when entering data that references a foreign key. This error can arise in various contexts, such as during data entry, table maintenance, or when working with data models.
  
  Cause:
  
  Incorrect Foreign Key Value: The value entered for a foreign key does not match any existing primary key in the referenced table.
  Missing Required Fields: The foreign key relationship may require additional fields to be filled in, and these fields are not provided.
  Data Type Mismatch: The data type of the foreign key value does not match the data type of the primary key in the referenced table.
  
  Configuration Issues: There may be issues with the configuration of the foreign key relationship in the data model or database schema.
  
  
  Solution:
  
  Verify Foreign Key Values: Check the value