Assume that you use Microsoft SQL Server ted on a database by using high-safety mode with automatic failover.
Error: 2801, Severity: 16, State: 1
The definition of object 'stored_procedure_name' has changed since it was compiled.
This issue is fixed in the following cumulative updates for SQL Server:
Cumulative Update 9 for SQL Server 2012 Service Pack 3
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.