How To Fix EB666 - Deletion not possible, posting relevant IS-U transaction data exists

EB666 - Overview

• Message type: E = Error

• Message class: EB - IS-U invoicing

• Message number: 666

• Message text: Deletion not possible, posting relevant IS-U transaction data exists

What causes this issue?

The transaction called has identified IS-U transaction data that is
relevant to posting (print documents, budget billing plans and so on).

System Response

In the company code the data could not be automtically deleted because
this would cause an inconsistency in the dataset.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EB666 - Deletion not possible, posting relevant IS-U transaction data exists ?

  The SAP error message EB666, which states "Deletion not possible, posting relevant IS-U transaction data exists," typically occurs in the context of the SAP IS-U (Industry Solution for Utilities) module. This error indicates that you are trying to delete a master data record (such as a contract account, business partner, or installation) that has associated transaction data, which prevents the deletion.
  
  Cause:
  The primary cause of this error is that the record you are attempting to delete is linked to existing transaction data. This could include:
  
  Open invoices or billing documents
  Meter readings
  Contracts or agreements
  Other relevant postings that are still active or have not been fully processed
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify Related Transaction Data:
  
  Use transaction codes like FBL1N (Vendor Line Item Display), FBL3N (G/L Account Line Item Display), or FBL5N (Customer Line Item Display) to check for any open items related to the record you are trying to delete.
  Check for