Seaquel
SQL Server error code

SQL Server error 8786

SQL Server raises error 8786 at severity 16, which marks a problem with the query or data that you can correct.

Query processor could not force query provided in USE PLAN hint because it couldn't generate an index seek close enough to the specified in the showplan XML.
Msg8786
Severity16
Group8000–8999

Source: Database Engine events and errors