How to identify the caller of a Stored Procedure from within the Sproc

Question

I have a deprecated stored procedure which should no longer be called from code, but there is some system which is still calling it. This is a production server so I have very

Answer 1

@@SPID should give you the current process ID.

Then,

select * from master.dbo.sysprocesses where spid = @@SPID

You can get what you need from one of those columns.