Did you actually read Books Online?

https://docs.microsoft.com/en-us/sql/relational-databases/user-defined-functions/deterministic-and-nondeterministic-functions

This may work.
DATETIMEFROMPARTS (DATEPART(year, c.Calldate), DATEPART(month, c.Calldate), DATEPART(day, c.Calldate), DATEPART(hour, c.calltime), DATEPART(minute, c.calltime), DATEPART(second, c.calltime), 0)

From Books Online:

CAST - Deterministic unless used with datetime, smalldatetime, or sql_variant

Try using CONVERT with the style specified.

And, why are you converting to a...

I had the same issue on various servers, and ended up putting a loop in place to test for something reading or writing to the logs.  
This code can certainly...

https://dbatools.io/

Works like a charm, every time.

This is a classic catch-all query.  
I had this exact same issue to deal with, a search screen with an almost an infinite number of possibilities. 

I captured the...

Is it possible to post the actual code?

SELECT CAST(column1 AS INT) AS column1 is your error.

You can't cast 'ABC' to an integer.