How To Fix ATP_BOP_LOGIC031 - Fallback variant &1 is triggered.

SAP Error Message - Details

• Message type: E = Error

• Message class: ATP_BOP_LOGIC -

• Message number: 031

• Message text: Fallback variant &1 is triggered.

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 ATP_BOP_LOGIC031 - Fallback variant &1 is triggered. ?

  The SAP error message ATP_BOP_LOGIC031, which states "Fallback variant &1 is triggered," typically occurs in the context of Advanced Planning and Optimization (APO) or the Available-to-Promise (ATP) check in SAP. This message indicates that the system has encountered a situation where it cannot fulfill a request using the preferred planning variant, and as a result, it has switched to a fallback variant.
  Cause:
  
  Data Inconsistency: The primary cause of this error is often related to data inconsistencies or missing data in the master data or transaction data that the ATP check relies on.
  Configuration Issues: Incorrect configuration of the planning variants or the settings in the APO system can lead to the fallback variant being triggered.
  Resource Constraints: If the preferred variant cannot allocate resources due to constraints (like capacity issues), the system may revert to a fallback variant.
  Planning Area Issues: Problems with the planning area or the characteristics used in the planning process can also lead to this error.
  
  Solution:
  
  Check Master Data: Ensure that all relevant master data (like material master, location, and resource data) is correctly maintained and consistent.
  Review Configuration: Verify the configuration of the planning variants in the APO system. Ensure that the preferred variant is correctly set up and that all necessary settings are in place.
  Analyze the Fallback Variant: Investigate the fallback variant that is being triggered. Understand its configuration and why it is being used instead of the preferred variant.
  Check for Constraints: Review any constraints that may be affecting the ATP check, such as capacity constraints or other resource limitations.
  Debugging: If necessary, use debugging tools to trace the ATP logic and identify where the fallback is being triggered.
  Consult Documentation: Refer to SAP documentation or notes related to ATP and planning variants for additional insights and troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to ATP and planning variants.
  Transaction Codes: Use transaction codes like /SAPAPO/ATC for checking the ATP configuration or /SAPAPO/MC62 for analyzing the planning area.
  Community Forums: Engage with SAP community forums or support channels for additional insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.