Message Oracle PLS-00333 - string must match an object-table alias in this context

ERRORstring must match an object-table alias in this context
CAUSEThe name, appearing in the context of a REF or VALUE, did not resolve to an object-table alias.
ACTION1) If there is no object table in the scope, then remove the REF or VALUE; or provide the missing object table reference. 2) If there is an object table in the scope, but youre not referring to it, add the reference.