Authorization Integrity Fee

Greetings,

We just received the following message from our credit card processor.

"
The amount of your Approved Charges without matching submissions has reached 10% of the total amount of Approved charges therefore you will be charged an additional fee of 0.10% for each approved charge for which you did not reverse, submit or submit late.

An Approved charge is considered not to have a submission if the approved charge is not reversed or submitted within the specified authorization time limit. An approved charge should be submitted or reversed within seven days.
"
The strange here is that we are always submitting the full amount following the api documentation, authorization + capture.

Could you please help us to understand what we are doing wrong ? We currently support the following operations

1- Customer purchase item from portal.
2- We pay once shipment starts.
3- We support refund.
4- We support recurring billing (token based)

I am sure you faced the same scenario previously and can propose an adequate solution.

Thank you in advance for your prompt reply.