How To Fix AD300 - Primary key change not permitted for value table &

AD300 - Overview

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 300

• Message text: Primary key change not permitted for value table &

What causes this issue?

This table is defined as a check table. For reasons of consistency,
changes to the primary key of the table are not allowed.

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?

If it is essential that you change the primary key, you must delete the
relevant foreign keys. Refer to the where-used list to find all tables
containing a field that is checked against this table. Delete the
foreign keys for these fields.
If necessary, maintain the deleted foreign keys again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD300 - Primary key change not permitted for value table & ?

  The SAP error message AD300, which states "Primary key change not permitted for value table &," typically occurs when there is an attempt to modify the primary key of a value table in the Data Dictionary (DDIC) of SAP. Value tables are used to store the possible values for fields in a domain, and they are often linked to domains that define the allowed values for a particular field.
  
  Cause:
  
  Primary Key Modification: The error arises when there is an attempt to change the primary key of a value table. In SAP, the primary key of a value table is fixed and cannot be altered once it has been defined.
  Data Integrity: The system enforces this restriction to maintain data integrity and consistency, as changing the primary key could lead to inconsistencies in the data that relies on that table.
  
  
  Solution:
  
  Avoid Primary Key Changes: If you need to change the primary key, consider creating