How To Fix W_CB188 - List and customer exclude one another

SAP Error Message - Details

• Message type: E = Error

• Message class: W_CB -

• Message number: 188

• Message text: List and customer exclude one another

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W_CB188 - List and customer exclude one another ?

  SAP Error Message:
  
  W_CB188: List and customer exclude one another
  
  Cause:
  This warning message occurs in SAP when you try to assign both a customer and a customer list simultaneously in a context where these two are mutually exclusive. In other words, the system does not allow you to specify a single customer and a customer list at the same time because they represent overlapping or conflicting selection criteria.
  Typically, this happens in scenarios such as:
  
  Pricing condition records
  Customer-specific pricing or discounts
  Customer master data maintenance
  Customer group or list assignments in sales documents or master data
  
  The system expects either a single customer or a customer list (group of customers), but not both together.
  
  Solution:
  
  Choose either a single customer or a customer list, but not both at the same time.
  Review the data entry screen or configuration where the error occurs and remove either the customer or the customer list field.
  If you intended to apply the condition or setting to multiple customers, use the customer list only.
  If the condition or setting is specific to one customer, enter only that customer and leave the customer list field blank.
  
  
  Related Information:
  
  This message is a warning (W_), so it may not stop processing but indicates a potential conflict.
  It is common in pricing condition records maintenance (transaction codes like VK11, VK12, VK31, etc.).
  Customer lists are used to group customers for pricing or other business rules.
  The exclusion ensures clarity in condition application and prevents ambiguous or conflicting data.
  
  
  Example:
  In transaction VK11 (Create Condition), if you enter a specific customer number in the "Customer" field and also enter a customer list in the "Customer List" field, SAP will issue W_CB188 because it cannot apply the condition to both simultaneously.
  
  If you need further help, please provide the transaction or process where the error occurs.