How To Fix ISJP123 - Invoice Summary data already exist for customer &1 and company code &2

ISJP123 - Overview

• Message type: E = Error

• Message class: ISJP - Message class for invoice summary

• Message number: 123

• Message text: Invoice Summary data already exist for customer &1 and company code &2

What causes this issue?

You are trying to create new Invoice Summary master data.

System Response

You cannot overwrite the existing data. No data can be entered. Existing
data are not shown.

How to fix this error?

Switch to change or display transactions if you want to access to
existing Invoice Summary master data

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ISJP123 - Invoice Summary data already exist for customer &1 and company code &2 ?

  The SAP error message ISJP123 indicates that there is already existing invoice summary data for a specific customer and company code combination. This typically occurs when you attempt to create or post an invoice summary that overlaps with existing data in the system.
  
  Cause:
  
  Duplicate Entry: The most common cause is that an invoice summary for the same customer and company code has already been created or posted.
  Data Migration Issues: If data was migrated from another system, it’s possible that duplicate records were created during the migration process.
  Incorrect Posting: There may have been an incorrect posting or transaction that led to the creation of an invoice summary that you are trying to create again.
  
  
  Solution:
  
  
  Check Existing Data: 
  
  Use transaction codes like FBL1N (Vendor Line Item Display) or FB03 (Display Document) to check if there is already an invoice summary for the specified customer and company code.
  Look for any existing entries that match the