Web Services SaaS Connector | How to pass attribute received in JSON response (of Create Operation) in GetObject Request URL?

@SailPoint_Learner There is a similar post of resolving the issue, you have to write a afterOperation connector rule:

Webservice Connector - Create Account Operation - Empty Response - Identity Security Cloud (ISC) / ISC Discussion and Questions - SailPoint Developer Community

You may also look into below:
Create Account returns id(nativeIdentity in the schema), it is not getting mapped - Identity Security Cloud (ISC) / ISC Discussion and Questions - SailPoint Developer Community