ATO_CUSTOMER266 - ATO system type must be specified.

SAP Error Message - Details

• Message type: E = Error

• Message class: ATO_CUSTOMER - ATO Messages for the End User

• Message number: 266

• Message text: ATO system type must be specified.

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message ATO_CUSTOMER266 - ATO system type must be specified. ?

  The SAP error message ATO_CUSTOMER266, which states "ATO system type must be specified," typically occurs in the context of Advanced Variant Configuration (AVC) or Assemble-to-Order (ATO) processes. This error indicates that the system is expecting a specific ATO system type to be defined, but it has not been provided in the configuration or order.
  Cause:
  
  Missing Configuration: The ATO system type has not been defined in the material master or in the configuration profile for the product.
  Incorrect Master Data: The material or product being configured may not have the necessary settings for ATO processing.
  Incomplete Order Data: When creating an order, the required fields related to ATO system type may not have been filled out.
  
  Solution:
  
  
  Check Material Master:
  
  Go to the material master record for the product in question (transaction code MM03).
  Ensure that the ATO system type is specified in the relevant views (e.g., Basic Data, Sales, or Plant data).
  
  
  
  Review Configuration Profile:
  
  Check the configuration profile associated with the material (transaction code CU50).
  Ensure that the ATO system type is defined correctly in the configuration settings.
  
  
  
  Update Order Entry:
  
  If the error occurs during order entry, ensure that all required fields are filled out correctly, including the ATO system type.
  If using a custom transaction or interface, verify that it is passing the necessary parameters.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to ATO and AVC to ensure that all necessary configurations are in place.
  
  
  
  Check User Exits or BAdIs:
  
  If custom logic is implemented, check for any user exits or BAdIs that might be affecting the ATO system type assignment.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: MM03 (Material Master), CU50 (Configuration Profile), VA01 (Create Sales Order).
  Documentation: SAP Help Portal for Advanced Variant Configuration and Assemble-to-Order processes.
  Configuration Settings: Ensure that the ATO system type is aligned with the business processes and requirements for the specific product line.
  
  By following these steps, you should be able to identify and resolve the issue related to the ATO_CUSTOMER266 error message in SAP.