For KING ERP users it is possible to post in the booking screen using line fields to any combination of general ledger account and/or cost center and/or cost unit. Since cost centers and cost units are created as general ledger accounts in KING ERP, it may happen that the selected combination does not yet exist. In that case this message appears during export.
Solution: consult KING ERP and manually create the general ledger account as selected in the booking screen (e.g. 4240.1.2). Here '1' is the number of the cost center and '2' is the number of the cost unit. After this, the booking can be exported.
Do you want Zenvoices to automatically create new combinations of general ledger accounts and/or cost centers and/or cost units during export? Consult this article for more information.
Are the columns for cost center and cost unit not visible in the booking screen? In this article you can read how to add them.