How To Fix M3426 - Fixed lot size and maximum stock level not possible in a single profile

M3426 - Overview

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 426

• Message text: Fixed lot size and maximum stock level 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 M3426 - Fixed lot size and maximum stock level not possible in a single profile ?

  The SAP error message M3426, which states "Fixed lot size and maximum stock level not possible in a single profile," typically occurs in the context of material requirements planning (MRP) and inventory management. This error indicates a configuration issue in the material master data, specifically in the lot size settings for a material.
  
  Cause:
  The error arises when there is a conflict in the lot size settings for a material. In SAP, you can define different lot size types for production and procurement, such as:
  
  Fixed Lot Size: A fixed quantity that is produced or procured each time.
  Maximum Stock Level: A limit on the maximum quantity of stock that can be held.
  
  When both a fixed lot size and a maximum stock level are defined in the same lot size profile, SAP cannot process the request because these two settings are incompatible. Essentially, if you have a fixed lot size, it contradicts the idea