...
If a user wants to create a row for a customer in a table, and the report has not been opened from the customer, he must also select the Customer number (the customer's name will then be automatically completed). For a detailed description of the table, see Nastavení Business Setup
When selecting Print Category, there cannot be two rows (templates) with the same non-empty Customer No. and Print Category. If the user selects the same category twice with the same customer number, the system displays an error message and does not allow continuing:
...