How To Fix OL845 - No more key fields can be set

OL845 - Overview

• Message type: E = Error

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

• Message number: 845

• Message text: No more key fields can be set

What causes this issue?

The key fields of an object cannot be changed once an attribute has
been accessed or a method called (&V1&).

How to fix this error?

If you want to access an object with other key fields, create a new
object using SWO_CREATE. If you no longer require the old object, you
can release it with SWO_FREE.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OL845 - No more key fields can be set ?

  The SAP error message OL845 "No more key fields can be set" typically occurs in the context of defining or modifying a table or data structure in the ABAP Dictionary (SE11) or when working with data models in SAP. This error indicates that you have reached the maximum number of key fields allowed for a particular table or structure.
  
  Cause:
  
  Maximum Key Fields Exceeded: In SAP, a database table can have a maximum of 16 key fields. If you attempt to add more than this limit, you will encounter the OL845 error.
  Incorrect Table Design: Sometimes, the design of the table may not be optimal, leading to unnecessary key fields being defined.
  
  
  Solution:
  
  Review Key Fields: Check the existing key fields of the table or structure. Determine if all of them are necessary for the unique identification of records.
  Remove Unnecessary Key Fields: If you find that some key fields are not essential, consider removing them