A common question we receive is what is the relation between the Revision number and the document. An example would be looking at a Sales Order List, Ship Doc List, Work Order List, etc ... and adding the Revision column what does that number represent.
The way that Order Time determines the Revision number of a document is by the number of times a PDF is created and saved. More often then not the Revision number displaying on the list will show the number 1. But once a PDF of that document is created and saved the Revision number will increase incrementally thus changing the Revision number from 1 to 2 and so on.