How To Fix OL663 - Local key fields deleted

OL663 - Overview

• Message type: E = Error

• Message class: OL - Workflow object types: Run-time system

• Message number: 663

• Message text: Local key fields deleted

What causes this issue?

You are trying to convert an object type into a subtype of another
object type. However, no key changes are permitted in subtypes and as a
result, the local key fields of the new subtype are deleted and the
subtype inherits the key field definitions of the supertype.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OL663 - Local key fields deleted ?

  The SAP error message OL663 ("Local key fields deleted") typically occurs in the context of data processing or configuration in SAP systems, particularly when dealing with data structures or database tables. This error indicates that key fields that are defined locally in a data structure or table have been deleted, which can lead to inconsistencies or issues in data processing.
  
  Cause:
  
  Field Deletion: The most common cause of this error is the deletion of key fields from a table or structure that is being referenced in a program or transaction. This can happen during modifications to the data model or when changes are made to the underlying database schema.
  Inconsistent Data Model: If the data model has been altered (e.g., through a transport request) and the changes have not been properly synchronized across all relevant components, it can lead to this error.
  Custom Development: If there are custom developments (like ABAP programs or enhancements)