How To Fix MPE_PLAN_RTG_VERS120 - Function &1 not possible for lot size <> 1

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_PLAN_RTG_VERS - Manage Production Routing Version

• Message number: 120

• Message text: Function &1 not possible for lot size <> 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.

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_VERS120 - Function &1 not possible for lot size <> 1 ?

  The SAP error message "MPE_PLAN_RTG_VERS120 Function &1 not possible for lot size <> 1" typically occurs in the context of production planning or material requirements planning (MRP) when the system encounters an issue related to the lot size of a production order or planned order. This error indicates that a specific function (denoted by &1) cannot be executed because the lot size is not equal to 1.
  Cause:
  
  Lot Size Configuration: The error often arises when the system is trying to perform an operation that is only valid for a lot size of 1. This could be due to the configuration of the material master or the production version.
  Planning Parameters: The planning parameters set for the material may not allow for operations to be performed on lot sizes greater than 1.
  Order Type Restrictions: Certain order types may have restrictions that prevent them from being processed unless the lot size is set to 1.
  Functionality Limitations: The specific function being called (indicated by &1) may have inherent limitations that restrict its use to lot sizes of 1.
  
  Solution:
  
  Check Lot Size Settings: Review the lot size settings in the material master (MM02) and ensure that they are configured correctly for the intended production process.
  Adjust Planning Parameters: If applicable, adjust the planning parameters for the material to allow for the desired lot size. This may involve changing the lot size category or other related settings.
  Review Order Type: Check the order type being used and ensure that it supports the lot size you are trying to work with. If necessary, consider using a different order type that allows for larger lot sizes.
  Functionality Review: Investigate the specific function that is causing the error (as indicated by &1) and determine if there are alternative methods or functions that can be used for processing larger lot sizes.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on the specific function and its limitations regarding lot sizes.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common errors.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MD01 (MRP Run), CO01 (Create Production Order), and others that may be involved in the planning and production process.
  User Exits and BAdIs: If custom logic is involved, review any user exits or Business Add-Ins (BAdIs) that may be affecting the lot size handling in your system.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in production planning.