I believe it is a good way if you use ORM:

Property CreatedAt As %TimeStamp [ InitialExpression = {$ZDATETIME($HOROLOG, 3)}, Required ];

Hi everyone,

• My name is Andrew 
• I am living in Thailand 
• I am a Senior Software Engineer, and sometimes work as an Integration Architect 
• I work on and support a huge implementation of IRIS as an Enterprise Service Bus. Actually, I think it is one of the biggest IRIS instances that is used exactly as a Service Bus (maybe the biggest). We do not have a very intensive inbound data flow, this is around 300 RPS, but my Productions contains thousands of Business Hosts, dozens of combined systems, and an amount of transmitted data of around 2 TB per week. So, my specialization is Interoperability. Feel free to ask me about app integration. BTW, I'm looking for an additional job for now.
• My hobby is sports. Here in Thailand, all men must learn Muay Thai. It's a joke, of course, but Thailand and Thai boxing it is like Dagestan and wrestling. Maybe one day I'll change all these boring globals to the fighter's way 😁 (subscribe to my fighter Instagram: https://www.instagram.com/andrey.sklyaroff )
• And my Link: https://www.linkedin.com/in/andrey-sklyaroff

To exclude the version with inbound parameter (and too big data in selected field), I modified the query as:

"with st as (select * from prod.stocks limit 1) select json_agg(row_to_json(st)) #>> '{}' from st"

The error remained the same