enter the first sequence with no restrictions (e.g. leave the Product Category, Product and Vendor fields empty) for the Base Price List and the Customer Price List. This will ensure that all products in the base price list (if used) and/or the products with replenishment information are included.
enter the sequences from the least specific to most specific.
price lists should be created in steps, as it is easier to identify and correct the mistakes this way.
if you require separate Vendor Price Lists for each vendor, then create a Base Vendor Price List for all products and then add specific price lists for each vendor, using the first one as basis and a sequence that only includes one specific partner. When creating a customer price list, use the base vendor price list as basis, and not an individual vendor price list.
for services (which are only sold and not purchased from a vendor), define a purchasing list with the Admin or Business Partner User Role as Vendor. This will allow you to generate prices for the services. Another option would be to enter them manually for each price list.