Issue with GUID missing {, } at the beginning and end

Hello All,

We are updating the CRM 2016 database through Scribe Workbench and we are getting an error that "system userid with id 52399f7f-eb80-e211-8e50-005056af5591 does not exist"

I have tried below mentioned solutions

Solution 1: Explicitly map owneridtype, already this is mapped to 9(team)

Solution 2: Another solution is that include {, } before and after the GUID.

The GUID value is returned by a DBLOOKUP function.

NOTE: I have been searching in many forums including SCRIBE forum since 2 weeks but i have not found  how to do add braces to DBLOOKUP. Is it thorugh CONCATENATE()?

Can anyone help me to do this.