Message type: E = Error
Message class:  VKKTAX - FS-CD: Messages for Insurance Tax 
Message number: 105
Message text: Module &1 is obsolete - use module &2
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.
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.
The SAP error message VKKTAX105 indicates that a specific module (denoted as &1) is considered obsolete and that users should transition to using a different module (denoted as &2). This type of message typically arises during the execution of a transaction or program that relies on outdated functionality.
Cause: Obsolescence of Module: The module you are trying to use has been deprecated or replaced by a newer version. This can happen due to updates in SAP software, where certain functionalities are improved or restructured.
Configuration Issues: Sometimes, the system configuration may still reference the old module, leading to this error when attempting to execute related transactions. Custom Code: If there are custom developments or enhancements that reference the obsolete module, they may trigger this error.
Solution: Identify the New Module: Check the error message for the new module name (&2) that should be used instead of the obsolete one. This is crucial for understanding what changes
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
VKKTAX104 Not possible to read tax schedule &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
VKKTAX103 Partial clearings for taxes and premium must have same relationship
What causes this issue?  You have attempted to execture partial clearing for a premium with taxes. However, this is only permitted if the relationship...
VKKTAX106 Select a company code first
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
VKKTAX107 Transfer posting not permitted for item &1, &2
What causes this issue?  You have attempted to transfer post premiums or taxes partially to premiums. in this case, transfer posting is only permitted...
Click on this link to search all SAP messages.