Referring to ISO 9001:2015 Clause 7.5.2 and 7.5.3 - On my external documents, I send my customers such as invoices and PODs do my identification numbers, revision and revision date, etc. have to be visible on the documents?
Normally, those documents are issued over digital support. So, to control those documents you need to control the software that issues them. That way you don’t need to show identification numbers, revision and revision date.