How To Fix WU777 - Material &: Quantity change not possible for generic materials

WU777 - Overview

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 777

• Message text: Material &: Quantity change not possible for generic materials

What causes this issue?

You changed the planned sales quantity, the minimum order quantity or
the allocation quantity of a generic material.

System Response

You can only make these changes for the variants of a generic material.
The system then sets the sum of all variant quantities for the generic
material.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WU777 - Material &: Quantity change not possible for generic materials ?

  The SAP error message WU777, which states "Material &: Quantity change not possible for generic materials," typically occurs when you are trying to change the quantity of a generic material in a transaction where such changes are not allowed. Generic materials in SAP are often used in scenarios like variant configuration or when dealing with materials that have multiple variants but are treated as a single entity in certain transactions.
  
  Cause:
  
  Generic Material Type: The material you are trying to modify is defined as a generic material, which means it does not have a specific quantity associated with it in the same way that a standard material does.
  Transaction Restrictions: Certain transactions in SAP do not allow changes to the quantity of generic materials due to the way they are structured in the system.
  Configuration Settings: The system may be configured to prevent changes to quantities for generic materials to maintain data integrity.
  
  
  Solution:
  
  Use Specific