How To Fix M3429 - Fixed lot size and max. lot size not possible in a single profile

M3429 - Overview

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 429

• Message text: Fixed lot size and max. lot size not possible in a single profile

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message M3429 - Fixed lot size and max. lot size not possible in a single profile ?

  The SAP error message M3429, which states "Fixed lot size and max. lot size not possible in a single profile," typically occurs in the context of material requirements planning (MRP) or production planning when there is a configuration issue with the lot size settings in the material master or the production version.
  
  Cause:
  This error arises when you attempt to configure a lot size profile that includes both a fixed lot size and a maximum lot size. In SAP, a lot size profile can only have one of these settings at a time. If both are defined, the system cannot determine which one to apply, leading to this error.
  
  Solution:
  To resolve this error, you need to review and adjust the lot size settings in the material master or the relevant configuration settings. Here are the steps you can take:
  
  
  Access Material Master:
  
  Go to transaction code MM02 to change the material master.
  Enter the material number