How To Fix M3497 - Enter a valid lot size (materials planning)

SAP Error Message - Details

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 497

• Message text: Enter a valid lot size (materials planning)

What causes this issue?

The lot size specified in materials planning does not make sense here
since quantity updating is not defined for the current material type in
the plant specified.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Choose a lot size for which the lot-sizing procedure "lot-for-lot
order quantity" is defined.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M3497 - Enter a valid lot size (materials planning) ?

  The SAP error message M3497, "Enter a valid lot size (materials planning)," typically occurs during the materials planning process when the system expects a valid lot size for a material but receives an invalid or missing value. This error can arise in various scenarios, such as during the creation of a production order, purchase requisition, or when running MRP (Material Requirements Planning).
  Causes:
  
  Invalid Lot Size Configuration: The lot size defined in the material master or in the planning parameters may not be valid or may not match the expected values.
  Missing Lot Size: The lot size field may be left blank or not properly filled in during the planning process.
  Incorrect Material Master Data: The material master data may not be set up correctly, particularly in the MRP views.
  Planning Strategy Issues: The planning strategy assigned to the material may not be compatible with the lot size settings.
  User Input Error: The user may have