If an error occurs during synchornizing the sales invoice lines to crm invoice deails the sales invoice header is already inserted in dynamics 365 sales and the invoice gets stuck.

It would be necessary to delete the invoice in dynamics 365 sales and then the invoice could get synched again. It would be better to either if you can resolve the problem in Business Central wihtout some administrators in Dynamics 365 Sales or what would be better if the system discovers that the invoice is already inserted when it tries to synchronize it again.