Guided buying validation policy- restrict supplier to multiple commodities

[DanielOldfield]

Hi,

I'm attempting to create a validation policy that would restrict a supplier to a set of commodity codes. I've been able to create a restriction to a single code with no problem, however when attempting to set this up for multiple codes using the 'or' function it's not working and blocking all codes. I've attempted single line with the different commodities separated by | as well as separate lines for each commodity, with || (or) logical operator

i.e. if Supplier = 123456 and commodity code does not equal CommodityA or CommodityB or CommodityC, give an error to block transaction.

I've played around but cannot seem to get this to work as intended. I'm new to this role in my organization so would greatly appreciate anyone's generous guidance! Example of the attempted rule is shown below.

Many thanks,

Danny Oldfield