How To Fix RSTT0399 - Buffer test request statuses locked; additions not possible

RSTT0399 - Overview

• Message type: E = Error

• Message class: RSTT0 - Trace Tool: Message Class Engine Layer

• Message number: 399

• Message text: Buffer test request statuses locked; additions not possible

Self-Explanatory Message

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RSTT0399 - Details

• The SAP error message RSTT0399, which states "Buffer test request statuses locked; additions not possible," typically occurs in the context of transport requests and the transport management system (TMS) in SAP. This error indicates that the buffer for the transport request statuses is locked, preventing any further additions or modifications to the transport request.
  
  Cause:
  
  Locked Buffer: The transport request buffer is locked due to ongoing processes or transactions that are currently using it. This can happen if a transport request is being processed or if there are inconsistencies in the transport management system.
  System Configuration: There may be configuration issues or inconsistencies in the transport directory or transport management settings.
  User Lock: A user may have locked the transport request inadvertently, preventing others from making changes.
  
  
  Solution:
  
  Check Transport Request Status: Use transaction code SE09 or SE10 to check the status of the transport requests. Ensure that there are no requests currently being processed or