How To Fix AG856 - TM scheduling: error in TM; ATP confirmation not possible &1 &2 &3 &4

AG856 - Overview

• Message type: E = Error

• Message class: AG - Nachrichten ATP-Server

• Message number: 856

• Message text: TM scheduling: error in TM; ATP confirmation not possible &1 &2 &3 &4

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message AG856 - TM scheduling: error in TM; ATP confirmation not possible &1 &2 &3 &4 ?

  The SAP error message AG856, which states "TM scheduling: error in TM; ATP confirmation not possible &1 &2 &3 &4," typically occurs in the context of Transportation Management (TM) and Advanced Available-to-Promise (ATP) checks. This error indicates that there is an issue with the scheduling process in TM that prevents the system from confirming the availability of products.
  Causes:
  
  
  Configuration Issues: Incorrect settings in the Transportation Management configuration can lead to scheduling errors.
  Master Data Problems: Missing or incorrect master data (e.g., transportation lanes, shipping points, or product availability) can cause ATP checks to fail.
  Capacity Constraints: If the transportation resources (e.g., vehicles, drivers) are fully booked or not available, it can lead to scheduling errors.
  Integration Issues: Problems with the integration between SAP TM and other modules (like SAP ERP) can lead to inconsistencies in data.
  Order Data Issues: Incomplete or incorrect order data can also trigger this error.
  
  Solutions:
  
  Check Configuration: Review the TM configuration settings