How To Fix DB764 - Unable to select by initial value here

DB764 - Overview

• Message type: E = Error

• Message class: DB - Messages for logical databases and background processing

• Message number: 764

• Message text: Unable to select by initial value here

What causes this issue?

With the selection criterion "&V1&", you attempted to select by initial
value, but only generic entries (the wildcard characters '*' and '+')
are allowed here.

System Response

You cannot specify the selection optionen for "&V1&" until you have
made a generic entry.

How to fix this error?

Correct your input.

Error message extract from SAP system. Copyright SAP SE.

DB764 - Details

• The SAP error message DB764 "Unable to select by initial value here" typically occurs when there is an issue with the database selection process, particularly when the system is trying to access a database table or view using an initial value (like an empty string or null) that is not valid for the selection criteria.
  Causes:
  
  Initial Value in Selection Criteria: The error often arises when a selection criterion is set to an initial value (e.g., an empty string or null) that does not correspond to any valid entries in the database.
  Incorrect Data Type: The data type of the selection field may not match the expected type in the database, leading to issues when trying to perform a selection.
  Database Constraints: There may be constraints or conditions in the database that prevent selection based on the provided initial value.
  Program Logic: The logic in the ABAP program may not handle initial values correctly, leading