Canon imageRUNNER C2550 Network Manual page 172

<Digital sig. cert. access err.> is displayed.
Cause 1
Remedy
Cause 2
Remedy
7
7-18
Encrypted SSL Data Communication Problems and Remedies
Access to the user certificate was denied when sending a PDF with a user
signature.
See "Generating and Confirming a Key Pair and Device Signature Certificate
and User Certificate for Adding Digital Signatures to PDF Files" on p. 3-35 to
confirm the user certificate settings.
Access to the device certificate was denied when sending a PDF with a device
signature.
See "Generating and Confirming a Key Pair and Device Signature Certificate
and User Certificate for Adding Digital Signatures to PDF Files," on p. 3-35 to
confirm the device certificate settings.