Corp Supply Buying

I have a few corporations set to buy supplies above the 120 mark but when I check auto supply orders the supplies ordered aren't near the level I have set, and orders seem to default to "Any" for the purchased quality.

if the Q you request is not available the game will go for best it can get to the set mark. The theory behind this is better the corp producing vs waiting forever for your set Q. it usually keeps it close, but at 120, most corps never produce that low of a product, so I expect your receiving 160-230Q products, maybe as low as 130-140, but I'd guess the higher.

is this correct to what your seeing? the Q is variable. so think near 120 Q . Does that make more sense about buying vs the rule when you could be out of production waiting?
message me directly if you need more help, i'd be glad to help if I can or refer you to where or who might be able to.

Well I understand it tries to get as close as possible but I've noticed that for the orders for supplies it lists "Any" in the purchase order and not the quality I set for the corp. The end result is corps where I'm asking for supplies around 296 come in at only 220. The ones where I have left the default at 120 in the automated settings on my Enterprise do order close enough to 120.

ah, then the game is bypassing the 120 up cause of others wanting that specifically, if this is used up, then you would get higher quality of vary of what is not asked for.
So, make you settings constant to avoid the variable. you can use the trade screen very easily and select which to set to what. take a bit of time, but its nice, if you can handle it all coming in at a specific Q and make it across all corps then its fast. check your new corp settings to see if it is making corps with the setting of any vs what you want it to be at. you can set this so every corp starts with those settings.