How To Fix DT197 - Field &: Float type cannot be used in the key

DT197 - Overview

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 197

• Message text: Field &: Float type cannot be used in the key

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DT197 - Field &: Float type cannot be used in the key ?

  The SAP error message DT197 indicates that a field of type "Float" is being used as a key in a database table or structure, which is not allowed. In SAP ABAP, keys must be of certain data types that can be reliably used for indexing and retrieval, and floating-point numbers (Float) are not suitable for this purpose due to their inherent imprecision.
  
  Cause:
  The error occurs when:
  
  A field defined as a Float type is included in the key of a database table or structure.
  The key fields must be of fixed-length and precise data types, such as CHAR, NUMC, INT, or similar.
  
  
  Solution:
  To resolve this error, you need to change the data type of the field that is being used as a key. Here are the steps you can take:
  
  
  Identify the Field: Determine which field is defined as Float and is being used as a key.
  
  
  Change the Data Type:
  
  If the field is meant to