@Max Grabner great doc, appreciate the effort you went into putting this together. I see this was done in 2022. I believe we have External Content Connectors as well available now for a similar purpose. Did you try those ?
To perform batching and do a 'MultiThreaded' operation what I do is:1. write a script to create 'n' number of triggers (sys_trigger).
2. In the trigger creation code, i populate the script field of the trigger with the code to execute each individual...
Not sure if any of the solutions worked. But another thing to ensure is that you need to give the execute access to your client callable script include by creating an ACL for 'client_callable_script_include'. There you need to provide relevant roles ...