functionId 'ES:ES_ATTR_WEIGHT' is missing

What causes this issue?

The view has ranking functions assigned, and the view is relevant for
Enterprise Search (annotation @EnterpriseSearch.enabled).
Enterprise Search adds to the ranking functionality by evaluating how
significant is a result item based on the attributes wherein the search
terms have hit. This ranking influence has to be specified explicitly,
with its weight in the context of the other ranking functions.

System Response

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

How to fix this error?

Add another ranking function binding for ranking function
'ES:ES_ATTR_WEIGHT'. In principle, the weight could be set to 0, but
this is not recommended at all.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.