How To Fix U9501 - Entries in "Assignment" tab without entries in "Data" tab are not allowed

U9501 - Overview

• Message type: E = Error

• Message class: U9 - Message Class for Output in Application Log

• Message number: 501

• Message text: Entries in "Assignment" tab without entries in "Data" tab are not allowed

What causes this issue?

A new entry in the routing assignment table PLANMAP is only possible in
connection with the creation of an entry in the routing table PLAN.
Entry with errors in table PLANMAP with key: -&1

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.

U9501 - Details

• The SAP error message U9501, which states "Entries in 'Assignment' tab without entries in 'Data' tab are not allowed," typically occurs in the context of certain transactions or processes where data entries are expected to be consistent across different tabs or sections of a form or transaction.
  
  Cause:
  This error usually arises when:
  
  Incomplete Data Entry: You have made entries in the "Assignment" tab but have not provided corresponding entries in the "Data" tab. The system requires that if there are assignments made, there must be relevant data associated with those assignments.
  Validation Rules: The system has validation rules that enforce the requirement for data in both tabs to ensure data integrity and consistency.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Entries: Go to the "Assignment" tab and review the entries you have made. Ensure that for each entry in the "Assignment" tab, there is a corresponding entry in the "Data" tab.
  
  
  Complete