How To Fix WT121 - Customer &1 does not exist

WT121 - Overview

• Message type: E = Error

• Message class: WT - Retail: Replenishment

• Message number: 121

• Message text: Customer &1 does not exist

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

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WT121 - Details

• Certainly! Here's a detailed explanation for the SAP error message WT121: Customer &1 does not exist:
  
  Error Message
  WT121: Customer &1 does not exist
  
  &1 is a placeholder for the customer number that the system could not find.
  
  
  Cause
  This error occurs when the system tries to reference a customer master record that does not exist in the system. Common scenarios include:
  
  The customer number entered in a transaction or master data is incorrect or mistyped.
  The customer master record has not been created or has been deleted.
  The customer number is being referenced in a process (e.g., in a payment, billing, or withholding tax procedure) but is not maintained in the system.
  The customer number is missing in the relevant company code or sales area.
  In the context of withholding tax (WT), the customer might not be maintained in the withholding tax master data.
  
  
  Where It Typically Occurs
  
  Withholding tax processing (e.g., during invoice posting or payment processing).
  Sales and distribution transactions.
  Financial