How To Fix E2261 - Data type & is not allowed in the index field (field &)

E2261 - Overview

• Message type: E = Error

• Message class: E2 - DE Data Dictionary

• Message number: 261

• Message text: Data type & is not allowed in the index field (field &)

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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E2261 - Details

• The SAP error message E2261 indicates that there is an issue with the data type of a field that is being used in an index. Specifically, it states that the data type specified is not allowed for the index field in question. This error typically arises during the creation or modification of database tables or indexes in the ABAP Dictionary (SE11).
  
  Cause:
  The error occurs when:
  
  You are trying to use a data type that is not supported for indexing. Common unsupported data types include:
  Complex data types (like structures or tables)
  Certain floating-point types
  Long text fields (like STRING or CLOB)
  
  
  The field is defined in a way that does not comply with the requirements for index fields.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Data Type: Review the data type of the field that is causing the error. Ensure that it is a simple data type that is allowed for indexing. Commonly allowed