Categories not getting reflected in iProcurement for manually entered Blanket Purchase Agreements ?

Hello,

we are on R12.1.3

I created a blanket purchase agreement in below 3 ways.

1)  Buyer work center > Agreements > keyed in the header and uploaded the tab delimited file with shopping categories.  ---- Purchasing categories or shopping categories Showed up in iprocurement ----- Good experience

2)  Buyer work center > Agreements > keyed in the header > keyed in the lines as well  -------- Purchasing categories or shopping categories are not showing up. --- however if i search for the item i can find the item in iprocuremement.

While keying in the lines manually i could not find a field where in i can key in the shopping category