We have become aware that some correct QES signatures of our partners are not correctly interpreted and thus validated by the Validator of Switzerland (https://validator.ch). These are inserted visual signature fields that lead to a high nesting depth in the signature object. The problem has been addressed at the responsible office of the validator and cannot be traced back to errors at the partner or even Swisscom Trust Services in the issuing process. Thus, valid signatures are incorrectly displayed as "invalid" (red cross).

UPDATE: the high nesting depth, which could possibly lead to problems, was not identified as a problem with any of our partners. In this respect, in the case of negative feedback, there may actually be errors in the composition of the signed hashes in the PDF. These must be evaluated with the provider of the signature application.