What revision scheme do you use?
Is it alphanumeric? Do you have primary secondary and tertiary revisions?
one thing to consider might be which class/type of revision something is. The impact on the customer is the thing to consider.
the admin burden you put on a customer by uprevising something could be large if they have to update their systems to reflect it.
maybe they already have a copy of the drawing that they use for inspection. Will your changes affect this? Will they inspect against an old drawing?
do you need to tell your customer that you updated a spelling mistake. Probably not.
do you need to tell them you changed a bolt length from 20mm to 25mm? Possibly.
do you need to tell them you changed tolerances or changed the fit form or function? Always yes.
in each case, you might want to use a different level of your revision scheme.
You could use the the tertiary level for minor corrections, secondary for small changes not affecting the customer and primary for changes that do affect the customer.
its always best to have an internal guide for how to revision control parts and drawings.
