I created a category, added 4 products to it and assigned this category as
PCCT_VIEW_ALLW to my catalog. After that I added those 4 products to one of
my category under the PCCT_BROWSE_ROOT of Catalog. When I went to add those
products, those get added in the Shopping cart easily. Please tell me
AFAIK, that is the purpose of this special category.
Did you create category of PCCT_PURCH_ALLW type as well? Category of
this type must exist and your product not part of it to make it work
correctly. I would again suggest to read the Ofbiz business setup guide
again and again as you can