SQL Server engine-errors Error Codes
Database Engine — 7 error codes
Severity
Showing 7 of 7 error codes
1205
High
Deadlock — the transaction was deadlocked on resources with another process
3 common causes
2601
Medium
Duplicate Key — an attempt to insert a duplicate value into a unique index
3 common causes
2627
Medium
Constraint Violation — violation of a primary key or unique constraint
3 common causes
547
Medium
Conflicted Constraint — the statement conflicted with a foreign key or check constraint
3 common causes
18456
Medium
Login Failed — the user login attempt failed
3 common causes
208
Medium
Invalid Object — the specified object name is invalid or does not exist
3 common causes
4060
Medium
Cannot Open Database — the database requested by the login cannot be opened
3 common causes