Access Denied using DetectDocumentTextAsync in C#

Question

I've read other posts regarding access denied errors, and either they are mysteriously marked answered or the user is instructed to use another region.  
I have already verified that the iam user has the AmazonTextractFullAccess policy attached, and I've tried from both us-east-1 and eu-west-1.  I am able to use preview from console with this user without issue.  
  
The exception message is:  
ex.Message = "User: arn:aws:iam::????????????:user/???????? is not authorized to perform: textract:DetectDocumentText with an explicit deny"  
  
User details have been redacted.  
  
Any assistance would be appreciated.  
Thanks!

fhbiii · Answer

Following up.  After wasting someones time at AWS, we found that there is likely an explicit deny of the tesseract service on the user I was using.  While this didn't appear in the console, it did cause issues using the api from c#.  
  
Setting up a new user with only textract full access attached resolved my issue.

Access Denied using DetectDocumentTextAsync in C#

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