Projo currently numbers all services consecutively within an outgoing invoice — regardless of the numbering in the contract structure or in the offer. The aim would be for the numbers from the contract structure to always be decisive. If individual items have not yet been settled, there may well be gaps in the “Performance Status” appendix. This ensures that the positions on the part of the invoice recipients are always comparable using the numbers over the entire course of the project. However, this requires the following steps: Create an option for manual numbering in the contract structure => New services or service groups do not receive a number by default. This can be assigned manually. Instead, function for automatic renumbering in steps of 1 or 10. This option must be offered separately at each level (top level and each service group). These numbers would then be transferred from the contract structure 1:1 to the outgoing invoice as standard. Within the outgoing invoice (initially cummulatively later also individual), there must then be a button “Renumber benefits”. When transferring an offer, the “Transfer numbering” function must be available for you to select and deselect. By default, it should be enabled. This can result in duplicate service numbers in the contract structure, which can be resolved manually using the new function described under 1.