How To Fix DH300 - & is selection method for search help & and thus must remain DB table

DH300 - Overview

• Message type: E = Error

• Message class: DH - DD: Messages for search helps

• Message number: 300

• Message text: & is selection method for search help & and thus must remain DB table

What causes this issue?

The <DS:DE.TABCLASS>table category</> of table &V1& is changed, whereby
the table is converted from a database table into a structure.
Therefore you cannot select data from table &V1&. However, table &V1&
is being used as <DS:DE.SELMETHOD>selection method</> of
<DS:TX.DDDOK_SHLP_ELEMENTARY>elementary search help</> &V2&.

System Response

The change is rejected or performed with warnings.

How to fix this error?

Check if you really want to use the table as selection method of the
serach help. If so, you should cancel the table category change.
Otherwise you should specify a different selection method for the
search help (or delete it).

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.

DH300 - Details

• The SAP error message DH300 typically relates to issues with search helps in the SAP system. This error can occur when there is a problem with the selection method for a search help, particularly when it is not properly defined or when the underlying database table is not accessible or does not exist.
  Cause of DH300 Error
  
  Invalid Selection Method: The selection method defined for the search help may not be valid or may not point to a valid database table.
  Database Table Issues: The underlying database table that the search help is supposed to reference may not exist, may have been deleted, or may not be properly activated.
  Authorization Issues: The user may not have the necessary authorizations to access the database table or the search help.
  Configuration Errors: There may be configuration errors in the search help definition itself.
  
  Solution for DH300 Error
  
  Check Selection Method: Verify that the selection method defined for the search