How To Fix 26177 - Reservations for other change numbers exist

26177 - Overview

• Message type: E = Error

• Message class: 26 - Dokumentenverwaltung

• Message number: 177

• Message text: Reservations for other change numbers exist

What causes this issue?

There are reservations in engineering change management for this
document.

System Response

The system checks which change master records the document is reserved
in as a change object.

How to fix this error?

Since this document is reserved in at least one change master record as
a change object, you must select one of these change master records or
not enter a change number.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 26177 - Reservations for other change numbers exist ?

  The SAP error message 26177, which states "Reservations for other change numbers exist," typically occurs in the context of materials management and production planning when there are conflicting reservations related to different change numbers. This can happen in scenarios such as production orders, maintenance orders, or when dealing with material requirements planning (MRP).
  
  Cause:
  The error is triggered when you attempt to perform an action (like deleting or changing a reservation) on a material that has existing reservations linked to different change numbers. Change numbers are often used in SAP to track changes in production or engineering processes, and having multiple reservations for different change numbers can lead to conflicts.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Reservations: Use transaction codes like MB22 (Change Reservation) or MB23 (Display Reservation) to view the existing reservations for the material in question. Identify the change numbers associated with these reservations.
  
  
  Analyze Change Numbers: