How To Fix EVE_SETTINGS002 - Attribute &1 (data type &2) is not suitable as a key field

EVE_SETTINGS002 - Overview

• Message type: E = Error

• Message class: EVE_SETTINGS - Messages for Evaluation Engine Settings

• Message number: 002

• Message text: Attribute &1 (data type &2) is not suitable as a key field

What causes this issue?

You cannot use the attribute you specified as a key field.
Currently only the following combinations of attribute names and type
names are allowed as key fields:
Attribute,,Type Name,,Description
<EX>EVE_YEAR</>,,<AB><EX>EVE_TV_YEAR</></>,,Calendar Year
<EX>EVE_MONTH</>,,<EX>EVE_TV_MONTH</>,,Calendar Month

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

System Response

How to fix this error?

Choose a valid combination of attribute name and type name.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

EVE_SETTINGS002 - Details

• The SAP error message EVE_SETTINGS002 indicates that a specific attribute (field) is not suitable to be used as a key field in the context of the SAP system, particularly in the context of data modeling or data extraction processes. This error typically arises in environments such as SAP BW (Business Warehouse) or SAP HANA when defining InfoObjects, data sources, or similar structures.
  
  Cause:
  The error can occur due to several reasons:
  
  Data Type Incompatibility: The attribute you are trying to use as a key field may have a data type that is not compatible with key fields. For example, certain data types like text or long strings may not be suitable as key fields.
  Field Length: The length of the attribute may exceed the maximum allowed length for key fields.
  Non-Unique Values: Key fields must have unique values. If the attribute does not guarantee uniqueness, it cannot be used as a key field.
  Technical Settings: The