Auth API enroll status

I’m having problems using the enroll status endpoint. I can use many of the other endpoints without any problem but on this particular endpoint I’m receiving the following error:

Invalid signature in request credentials
error: 40103

I’m using the same authentication method for all the other endpoints so I don’t understand why this endpoint is causing me this issue. Does anyone experience something similar?

That’s generally unexpected. Are you sending any params to /enroll?