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

8A138 - Overview

• 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

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?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

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