How To Fix M7545 - Not all reservations could be blocked

SAP Error Message - Details

• Message type: E = Error

• Message class: M7 - Inventory Management and Physical Inventory

• Message number: 545

• Message text: Not all reservations could be blocked

What causes this issue?

You have chosen the 'Block all reservation headers' option.
The system could not carry out this function because reservations have
already been blocked.

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?

Ensure that there are no lock entries for the reservations.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M7545 - Not all reservations could be blocked ?

  The SAP error message M7545, "Not all reservations could be blocked," typically occurs in the context of inventory management and material requirements planning. This error indicates that there was an attempt to block reservations for materials, but not all of them could be successfully blocked. Here are some common causes, potential solutions, and related information for this error:
  Causes:
  
  Reservation Status: The reservation may already be partially processed or completed, preventing it from being blocked.
  Material Availability: The materials associated with the reservation may not be available in the required quantity, leading to issues in blocking.
  User Authorizations: The user may lack the necessary authorizations to block certain reservations.
  System Configuration: There may be configuration issues in the system that affect how reservations are handled.
  Batch Management: If batch management is enabled, issues with specific batches can prevent blocking.
  Open Purchase Orders: There may be open purchase orders or other transactions that conflict with the reservation.
  
  Solutions:
  
  Check Reservation