Error E00051 during CIM refund

[mps_sudipta]

I am using the CIM api to process partial refunds for a production/live account, and it's returning this error. Weirdly, I checked the AuthorizeNet request object that the api generates, and it does include the correct original settled transaction id, customer profile id, billing and shipping profile ids yet I am getting E00051 error. Any idea what else might be wrong?

[RaynorC1emen7]

Have you try it thru the merchant account interface to make sure it not a data issue?

[mps_sudipta]

Not yet, since this is the only refund for now that needs to go thorugh, and I want to be absolutely sure that this problem won't happen in future.

By the way. what do you mean by data issue? Can you please explain a bit more?