How To Fix WW099 - Deletion not possible. Allocation still exists for plant &

SAP Error Message - Details

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 099

• Message text: Deletion not possible. Allocation still exists for plant &

What causes this issue?

The material group is assigned to at least this plant. Materials of
this material group are also sold using the hierarchy material. For
this reason, it cannot be deleted.

How to fix this error?

Delete the assignment of the value-only material for all plant/material
group relationships.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WW099 - Deletion not possible. Allocation still exists for plant & ?

  The SAP error message WW099, which states "Deletion not possible. Allocation still exists for plant &," typically occurs when you attempt to delete a material or a related object (like a storage location or a plant) that still has allocations or assignments in the system. This can happen in various contexts, such as when trying to delete a material master record, a storage location, or a plant that is still being referenced in other transactions or data.
  Cause:
  
  Existing Allocations: The material or object you are trying to delete is still allocated to certain transactions, such as stock movements, purchase orders, sales orders, or production orders.
  Open Documents: There may be open documents (like purchase orders or sales orders) that reference the material or object.
  Stock on Hand: If there is stock on hand in the plant or storage location, the system will prevent deletion until the stock is cleared.
  Dependencies: Other dependent objects or configurations may still reference the material or object.
  
  Solution:
  To resolve the WW099 error, you can follow these steps:
  
  
  Check Allocations: Use transaction codes like ME2L (for purchase orders), ME2M (for material), or MB52 (for stock overview) to check if there are any existing allocations or documents referencing the material or object.
  
  
  Clear Stock: If there is stock on hand, you will need to either sell, transfer, or adjust the stock to zero before attempting to delete the material or object.
  
  
  Close Open Documents: If there are open purchase orders or sales orders, you may need to close or delete those documents before you can delete the material.
  
  
  Use Transaction Codes: 
  
  MM02: Change the material and set it to "Blocked" status if you do not want to use it anymore.
  MM06: Mark the material for deletion instead of deleting it outright.
  
  
  
  Check for Dependencies: Ensure that there are no other dependent objects that reference the material or object you are trying to delete.
  
  
  Consult with Your Team: If you are unsure about the implications of deleting a material or object, consult with your SAP team or a functional consultant to ensure that you are not affecting other processes.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), MM03 (Display Material), and MB1A (Goods Withdrawal).
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message.
  Documentation: Review SAP documentation or user manuals for best practices on material management and deletion processes.
  
  By following these steps, you should be able to identify the cause of the WW099 error and take appropriate action to resolve it.