Frequently Asked Question
Why do I get the "Invalid signature" message regarding date and time difference?
Last Updated 2 years ago
One of the common reasons why developers have the "Invalid signature" message in the response is a difference between sdcDateTime value and the time from the APDU commands results.
It is usual that milliseconds do not match for various reasons. It is advisable and permissible to use a shorter ISO 8601 and remove milliseconds in the invoice request.