To send approvals to third party through integration which is best practice, feasible & efficient?

[KM SN]

for catalog items I am depending on third party i.e. power automate to get approvals done created in ServiceNow. Through integration I am sending approval details to power automate, once after approval is done will get back approval status to ServiceNow.

I have made generalized sub flow so that one can use multiple times in same flow or in different catalog items as well.
ex. If I have 4 approvals, I am calling 4 times sub flow inside the flow.

or else I can do on same approval table? which is good to go?

I am going to have multiple catalog items where I should make these calls either inside the flow or from approval table itself using Business rule?

Note: details might change according to catalog item which I need to send them.

[KM SN]

whole point is to make rest calls to third party what is the best place is it inside the flow/sub flow or on approval table itself whenever a record is created?

Please consider below point while making rest calls from approval table.

Note: I need to send the approval type ex. individual or anyone group or everyone group so that Power automates can implement same logic their side accordingly. Once the approval status updated their side, I am bringing them back to ServiceNow through schedule job.

[KM SN]

Whole point is I should make rest calls to third party either from flow/sub flow or from approval table whenever a record is created through BR? Which is best practice? What are complications If I do on approval table?

Please consider below point If you going to say make rest calls from approval table.

Note: I need to send the approval type ex. individual or anyone group or everyone group so that Power automates can implement same logic their side accordingly. Once the approval status updated their side, I am bringing them back to ServiceNow through schedule job.