Signature and seal requirements

Every jurisdiction attaches personal or organisational accountability to design documents; they just do it differently. North America runs on the licensed engineer's seal. Other systems run on chartered or registered professional regimes, on authorising signatures of designated project roles — in CIS practice, the chief project engineer's signature carries the integrating responsibility for the whole design — or on the licence and certification of the design organisation itself rather than the individual. Increasingly, all of them run on qualified electronic signatures, with their own validity rules layered on top.

For anyone working across borders, these regimes are not interchangeable formats of the same thing; they allocate liability differently, and a document set perfectly authorised in one system can be legally unsigned in another. International projects routinely discover this at submission time.

The failure mode is formal and total: signature defects are completeness-check rejections, and they reject the whole package. Wrong signatory role, missing counter-signature, a scan where a qualified e-signature was required — none of it is engineering, all of it is calendar time, and it is the most preventable class of rejection there is.