How To Fix WER_CUST009 - &1 is invalid.

SAP Error Message - Details

• Message type: E = Error

• Message class: WER_CUST -

• Message number: 009

• Message text: &1 is invalid.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WER_CUST009 - &1 is invalid. ?

  The SAP error message:
  WER_CUST009 &1 is invalid.
  typically occurs when a user inputs an invalid or unrecognized value for a field that expects a specific customer-related code or identifier.
  
  Cause:
  
  The placeholder &1 in the message is replaced by the actual invalid value entered by the user.
  This error usually arises when the system expects a valid customer number, customer group, or a custom-defined customer-related code, but the entered value does not exist in the relevant master data or configuration table.
  It can also occur if the value is not maintained or activated in the system, or if there is a mismatch in the expected format or domain of the input.
  
  
  Common Scenarios:
  
  Entering a customer number that does not exist in the customer master (KNA1).
  Using an invalid customer group or classification code.
  Inputting a value in a custom field that is validated against a specific table or domain, and the value is not found.
  Data migration or interface errors where invalid customer codes are passed.
  
  
  Solution:
  
  
  Verify the Input Value:
  
  Check the value that caused the error (replace &1 with the actual value).
  Confirm that the value exists in the relevant master data (e.g., customer master KNA1).
  
  
  
  Check Master Data:
  
  Use transaction codes like XD03 or FD03 to display the customer master and verify the customer number.
  If the value is a customer group or classification, check the customizing tables (e.g., T077D for customer groups).
  
  
  
  Maintain or Correct Master Data:
  
  If the value does not exist, create or correct the master data.
  If the value is obsolete or incorrect, update the input to a valid one.
  
  
  
  Check Domain and Data Validation:
  
  Review the domain or data element associated with the field to ensure the input format is correct.
  Check if there are any user exits, BADIs, or validations that restrict the input values.
  
  
  
  Review Customizing and Configuration:
  
  If the error is related to custom fields or customer-specific configurations, verify the customizing settings.
  Ensure that all required values are maintained and active.
  
  
  
  Data Migration / Interface Checks:
  
  If the error occurs during data upload or interface processing, validate the source data.
  Correct the source data or mapping to ensure only valid customer codes are passed.
  
  
  
  
  Additional Information:
  
  The message class WER_CUST is often related to customer master data validations.
  You can look up the message text and details in transaction SE91 by entering the message class WER_CUST and message number 009.
  If the error occurs in a specific module (e.g., SD, FI), check module-specific master data and configuration.
  Consult SAP Notes or OSS messages if the error is related to a known issue or patch.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Invalid or non-existent customer-related value entered (customer number, group, etc.)
  
  
  Solution
  Verify and correct the input value; maintain or update master data; check validations
  
  
  Check
  Customer master (KNA1), customizing tables, domain definitions, user exits or validations
  
  
  
  
  If you provide the exact value that replaced &1 or the context (transaction, module), I can help you with more specific guidance.