How To Fix M3661 - Only individual planning possible (no quantity-based inventory mngt.)

SAP Error Message - Details

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 661

• Message text: Only individual planning possible (no quantity-based inventory mngt.)

What causes this issue?

For every possible combination of material type and plant you can
define whether quantity-based inventory management is allowed or not.
This is done in Customizing. If it is not allowed, the material may
only carry the "Individual requirements" indicator.

System Response

Quantity-based inventory management is not allowed for the material
type and plant of the current material.

How to fix this error?

Enter the "Individual requirements" indicator for this material.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M3661 - Only individual planning possible (no quantity-based inventory mngt.) ?

  The SAP error message M3661 "Only individual planning possible (no quantity-based inventory management)" typically occurs in the context of materials management and inventory planning within SAP. This error indicates that the system is set up in a way that does not allow for quantity-based inventory management for the material in question, which restricts the planning options available.
  Cause:
  
  Material Master Settings: The material may be configured in the material master record with a type that does not support quantity-based inventory management. For example, it might be set as a non-stock material or a service.
  Inventory Management Settings: The settings in the inventory management configuration may not allow for quantity-based planning for certain materials.
  Planning Type: The planning type assigned to the material may be set to individual planning, which does not support quantity-based planning.
  Valuation Type: The valuation type of the material may not be compatible with quantity-based inventory management.
  
  Solution:
  
  
  Check Material Master Record:
  
  Go to the material master record (transaction code MM03) and check the settings under the relevant views (Basic Data, Purchasing, MRP, etc.).
  Ensure that the material is set up for stock management if you want to use quantity-based planning.
  
  
  
  Review Inventory Management Configuration:
  
  Check the configuration settings in the SAP IMG (Implementation Guide) under Logistics > Materials Management > Inventory Management > Settings for Inventory Management.
  Ensure that the settings allow for quantity-based inventory management for the relevant material types.
  
  
  
  Adjust Planning Type:
  
  If the material is intended for quantity-based planning, consider changing the planning type in the material master to one that supports this feature.
  
  
  
  Consult with SAP Basis or Functional Consultant:
  
  If you are unsure about the settings or how to change them, consult with your SAP Basis or functional consultant for assistance. They can provide guidance on the appropriate configuration changes.
  
  
  
  Check for User Exits or BAdIs:
  
  Sometimes, custom developments or enhancements (like user exits or BAdIs) may affect how materials are planned. Check if any custom logic is impacting the planning process.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  MM03 (Display Material Master)
  MM02 (Change Material Master)
  MD01 (MRP Run)
  
  
  
  Documentation: 
  
  SAP Help Portal and SAP Notes related to material management and planning can provide additional insights and troubleshooting steps.
  
  
  
  Training: 
  
  Consider training sessions or workshops on SAP Material Management to better understand the configuration and planning processes.
  
  
  
  By following these steps, you should be able to identify the cause of the error and implement the necessary changes to resolve it.