How To Fix 8A138 - Select "Man. entry of WT tax" only if "Man. entry of WT base" is selected

SAP Error Message - Details

• Message type: E = Error

• Message class: 8A - Messages for Argentina

• Message number: 138

• Message text: Select "Man. entry of WT tax" only if "Man. entry of WT base" is selected

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 8A138 - Select "Man. entry of WT tax" only if "Man. entry of WT base" is selected ?

  The SAP error message 8A138 indicates that there is a conflict in the selection of manual entries for withholding tax (WT) in the system. Specifically, the error occurs when a user attempts to select the option for "Manual entry of WT tax" without also selecting "Manual entry of WT base." This is a validation rule in SAP to ensure that the withholding tax calculations are consistent and accurate.
  Cause:
  The error arises from the following conditions:
  
  The user has selected the option for "Manual entry of WT tax" but has not selected "Manual entry of WT base."
  The system requires that if you want to manually enter the withholding tax amount, you must also specify the base amount on which the tax is calculated.
  
  Solution:
  To resolve this error, you need to ensure that both options are selected correctly. Here are the steps to follow:
  
  
  Access the relevant transaction: Go to the transaction where you are entering the withholding tax information (e.g., MIRO for invoice processing).
  
  
  Check the options: Look for the checkboxes or fields related to "Manual entry of WT tax" and "Manual entry of WT base."
  
  
  Select both options: If you intend to manually enter the withholding tax amount, make sure to also select the option for "Manual entry of WT base."
  
  
  Re-enter the values: After selecting both options, enter the appropriate values for the withholding tax base and the tax amount.
  
  
  Save the transaction: Once both fields are populated and selected, you should be able to save the transaction without encountering the error.
  
  
  Related Information:
  
  
  Withholding Tax Configuration: Ensure that your withholding tax settings in the SAP system are configured correctly. This includes the tax codes, tax types, and any relevant settings in the Financial Accounting (FI) module.
  
  
  User Training: If users frequently encounter this error, consider providing training or documentation on how to correctly enter withholding tax information in SAP.
  
  
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or updates related to this error message.
  
  
  Testing: If you are in a testing environment, ensure that the configuration matches the production environment to avoid discrepancies.
  
  
  By following these steps, you should be able to resolve the error and proceed with your transaction in SAP.