There is currently no way to define number ranges for subcontractors. Subcontractors and customers are grouped into a series of numbers. So when a first customer is created, he gets the number 1. If a sub is then created, it automatically gets the 2, etc.
It should be possible for both customers and subs to create independent number ranges according to the scheme of the other categories (projects, offers,...) (enter number of digits, etc.).
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