What to do if the system requires you to select an optional modifier

If your menu includes items with optional modifiers or additional ingredients, make sure their minimum quantity is zero.

If the parameter is disabled, but the field contains a number other than zero, then when creating an order in r_k Delivery, the system will require adding a modifier or ingredient. 

Check the minimum amount of modifier:

1. In the r_keeper manager station, go to Menu > Modifier Schemes
2. Select a scheme
3. Select a group within the scheme
4. In the Main section, find the Minimum Quantity field and make sure it is set to 0
   
5. Edit the value if necessary and save the changes.

Done, now the system will not require adding an optional modifier.