How To Fix /CCIS/TAX663 - Entry '&' already exists, overwrite is prohibited

/CCIS/TAX663 - Overview

• Message type: E = Error

• Message class: /CCIS/TAX -

• Message number: 663

• Message text: Entry '&' already exists, overwrite is prohibited

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.

/CCIS/TAX663 - Details

• The SAP error message /CCIS/TAX663 Entry '&' already exists, overwrite is prohibited typically occurs in the context of the SAP Convergent Charging (SAP CC) module, particularly when dealing with tax configuration or similar entries. This error indicates that there is an attempt to create or modify an entry that already exists in the system, and the system is set to prevent overwriting existing entries.
  
  Cause:
  
  Duplicate Entry: The most common cause of this error is that you are trying to create a new entry (like a tax code, tax rate, or similar configuration) that has the same identifier as an existing entry in the system.
  Configuration Settings: The system may be configured to prevent overwriting existing entries to maintain data integrity and avoid accidental loss of important configurations.
  Data Migration or Import: If you are importing data or migrating from another system, there may be conflicts with existing entries.
  
  
  Solution:
  
  Check Existing Entries: Before creating a