How To Fix ATO012 - Assembly is running for collection &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ATO - Adaptation Transport Organizer Messages

• Message number: 012

• Message text: Assembly is running for collection &1

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 ATO012 - Assembly is running for collection &1 ?

  The SAP error message ATO012, which states "Assembly is running for collection &1," typically occurs in the context of the SAP Advanced Planning and Optimization (APO) or SAP Production Planning (PP) modules. This error indicates that an assembly process is currently in progress for a specific collection, and therefore, certain operations cannot be performed until the assembly process is completed.
  Cause:
  
  Ongoing Assembly Process: The primary cause of this error is that an assembly process is currently active for the specified collection. This could be due to a production order, a planned order, or a similar process that is still being executed.
  Locking Mechanism: SAP uses locking mechanisms to prevent data inconsistencies. If an assembly is in progress, the system locks certain operations to ensure data integrity.
  
  Solution:
  
  Wait for Completion: The simplest solution is to wait until the assembly process for the specified collection is completed. Once it is finished, you should be able to perform the desired operation without encountering this error.
  Check Status: Use transaction codes like CO03 (Display Production Order) or MD04 (Stock/Requirements List) to check the status of the assembly process. This will help you understand if the assembly is still running or if it has been completed.
  Cancel or Modify the Process: If you have the necessary permissions and it is appropriate to do so, you may consider canceling or modifying the ongoing assembly process. This should be done with caution, as it may affect production schedules and inventory.
  Consult with a Supervisor: If you are unsure about the implications of canceling or modifying the assembly process, consult with a supervisor or a colleague who has more experience with the specific assembly process in question.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO01 (Create Production Order), CO02 (Change Production Order), and CO03 (Display Production Order) to manage production orders effectively.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional context or solutions that may be specific to your version of SAP.
  Documentation: Review SAP documentation related to assembly processing and production planning to better understand the workflow and how to manage assembly processes effectively.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to your SAP support team or consult with an SAP expert for further assistance.