How To Fix WRF_CHAR_VAL036 - Characteristic type for &1 not changeable; is not "character format"

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_CHAR_VAL - Messages for Package WRF_CHARACTERISTIC_VALUE_GRP

• Message number: 036

• Message text: Characteristic type for &1 not changeable; is not "character format"

What causes this issue?

You tried to change the characteristic type of a characteristic whose
data type is not "character format".

System Response

INCLUDE ISR_STOP

How to fix this error?

Use transaction CT04 to check the data type of the characteristic

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.