When creating local qualified signatures in Adobe Acrobat, the PAdES B-LT signature level is currently not achieved automatically. In our case, the certificate is stored on a USB token. Additionally, we use a qualified timestamp, and the signature format is set to "CAdES". A qualified signature created in Acrobat only achieves the signature level PAdES B-T by default.

To reach the PAdES B-LT signature level, users must manually add additional validation information to the signature and save the document again. This manual workaround is too cumbersome and impractical for everyday use. Therefore, it would be highly desirable for Adobe Acrobat to automate this process so that the PAdES B-LT signature level is achieved directly during the signing process.