Kinds of system error
A system error can happen after stamping — for example outbound delivery failing while the CFDI is already issued. In that case, fix delivery; do not re-stamp.
Transient system issues may continue through automatic recovery. Permanent cases need a deliberate corrective path or Jaantonio support — not a second blind stamp.
See How stamping works for why stamp and delivery are separate, Retry safety for what recovery refuses, and Troubleshooting for next actions.