Search help parameter & does not occur in the selection method

What causes this issue?

The elementary search help has a
<DS:TX.DDDOK_SHLP_PARAMETER>parameter</> that does not occur in the
field as <DS:DE.SELMETHOD>selection method</>. The parameter is
therefore meaningless (unless the search help has a
<DS:TX.DDDOK_SHLP_EXIT>search help exit</> using this parameter).

System Response

The action is terminated (or continued with a warning if the search
help has a search help exit).

How to fix this error?

Check the name of the specified parameter. You might have to adjust it
to the name of the corresponding field of the selection method.
Otherwise you should probably delete the parameter completely.
INCLUDE DDDOC_SHLP_HANDLE

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.