Employment Verification endless loop of rejection. and cycle

 Despite multiple attempts, I find my application is rejected at the employment verification stage with no clear indication of what the problem might be or how to resolve it. 

Unfortunately, there are no error messages or notifications to guide me on what might be causing the issue. I have also contacted Microsoft Partner support, but I am yet to receive a response.

Now team reply me "As per Standards Review, the documents you have provided are not sufficient to complete the verification process".    

I provided the domain invoice and all required documents with all the required criteria but it still gets rejected.

Now I am seeking the support from your side for resolution.