How To Fix MPE_OAN057 - Maintain a component assignment quantity greater than zero

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 057

• Message text: Maintain a component assignment quantity greater than zero

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 MPE_OAN057 - Maintain a component assignment quantity greater than zero ?

  The SAP error message MPE_OAN057, which states "Maintain a component assignment quantity greater than zero," typically occurs in the context of production planning or material management when you are trying to assign components to a production order or a bill of materials (BOM) but have not specified a quantity greater than zero for one or more components.
  Cause:
  
  Zero Quantity Assignment: The most common cause of this error is that you are attempting to assign a component to a production order or BOM with a quantity of zero or not specifying a quantity at all.
  Incorrect Data Entry: There may be a mistake in data entry where the quantity was inadvertently left blank or set to zero.
  Configuration Issues: There could be configuration settings in the system that enforce certain rules regarding component assignments.
  
  Solution:
  
  Check Component Assignment: Go to the relevant transaction (e.g., CO01 for production orders or CS01 for BOM creation) and check the component assignments. Ensure that each component has a quantity greater than zero.
  Update Quantity: If you find any components with a quantity of zero, update them to the required quantity.
  Review BOM: If you are working with a BOM, ensure that all components listed have valid quantities assigned.
  Validation: After making the necessary changes, validate the entries to ensure that the error does not reoccur.
  Consult Documentation: If you are unsure about the required quantities, consult the relevant documentation or guidelines for the specific production order or BOM you are working with.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO01 (Create Production Order), CO02 (Change Production Order), CS01 (Create BOM), and CS02 (Change BOM).
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address specific issues.
  User Authorization: Ensure that you have the necessary authorizations to make changes to component assignments.
  Training: If you are new to SAP or the specific module you are working in, consider seeking training or guidance from a more experienced colleague or SAP consultant.
  
  By following these steps, you should be able to resolve the MPE_OAN057 error and successfully maintain component assignments in your SAP system.