Seaquel
SQL Server error code

SQL Server error 7874

SQL Server raises error 7874 at severity 16, which marks a problem with the query or data that you can correct.

An endpoint already exists with the bindings specified. Only one endpoint supported for a specific binding. Use ALTER ENDPOINT or DROP the existing endpoint and execute the CREATE ENDPOINT statement.
Msg7874
Severity16
Group7000–7999

Source: Database Engine events and errors