How To Fix MPE_PLAN_RTG_VERS131 - Original positive quantity &1 cannot be changed to negative &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_PLAN_RTG_VERS - Manage Production Routing Version

• Message number: 131

• Message text: Original positive quantity &1 cannot be changed to negative &2

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 MPE_PLAN_RTG_VERS131 - Original positive quantity &1 cannot be changed to negative &2 ?

  The SAP error message MPE_PLAN_RTG_VERS131 indicates that there is an issue with the planning version in the Material Planning Environment (MPE). Specifically, the error states that an original positive quantity cannot be changed to a negative quantity. This typically occurs during the planning process when trying to adjust quantities in a way that violates the business rules set in the system.
  Cause:
  
  Quantity Adjustment: The error usually arises when there is an attempt to change a planned quantity from a positive value to a negative value. This could happen during planning activities, such as when adjusting forecasts or production plans.
  Data Integrity Rules: SAP has built-in data integrity rules that prevent negative quantities in certain contexts, especially if they are not allowed by the business logic or configuration.
  Incorrect Planning Version: The planning version being used may not allow for negative quantities, or it may not be set up correctly to handle the changes being made.
  
  Solution:
  
  Review the Planning Data: Check the planning data for the material in question. Ensure that the quantities being entered are valid and conform to the business rules.
  Adjust the Quantity: If you need to reduce the quantity, consider adjusting it to zero instead of a negative value. If a negative quantity is necessary, you may need to review the business process or configuration to allow for this.
  Check Planning Version Settings: Review the settings of the planning version you are using. Ensure that it is configured correctly to handle the types of adjustments you are trying to make.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on handling planning quantities and the constraints of your particular version of SAP.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert who can provide insights based on your specific configuration and business processes.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context on handling planning quantities.
  Transaction Codes: Familiarize yourself with transaction codes related to planning, such as MD61 (Create Planning) or MD62 (Change Planning), to better understand where the error is occurring.
  User Roles and Authorizations: Ensure that the user attempting to make the changes has the necessary authorizations to perform the actions in the planning environment.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.