Has anyone used SuiteScript to generate SHA256 Signature? Need some guidance on it.

If you're talking about connecting to an external API endpoint, every API has its own expectation for how the signature is generated. Amazon SP-API expects it one way and another endpoint expects it a different way. It's like cooking...you may have the same ingredients and have the same steps to produce a dish and the taste will be different...

Thanks Eric Yes, I want to connect to external system.. which expects to generate the Signature in hmac256 and encode in base 64