Hi Mohana
I would recommend performing a syntax check on the CL_GRAC_PROVISIONING_ENGINE to see if there are issues as well as rechecking the modification you did as per the Note 1903306
Also, does the short dump tell you what the value for LT_CREATE_USER. You may want a developer to look at the definition of LT_CREATE_USER versus IT_USER to see if there is a type compatibility issue (sorry I'm not a developer here). Possibly there is a side effect of the note you applied or it's just coincidence
The note you mentioned seems to be part of SP14 and there is an SP15. Have a look at those packages and see if there are any other related notes.
If you can't progress you raise an incident with SAP via Marketplace.
Regards
Colleen