Search by purchasing categories instead of items

Summary:

We are currently going through UAT and client wants to search in RSSP by purchasing categories as they do not use inventory items. Can that be achieved given that there is no BPA in place for those purchasing categories?

Content (please ensure you mask any confidential information):

User logs into RSSP Page »» Navigate to search bar»»» search using defined purchasing categories (defined in Catalog Hierarchy»»» Select category »»» Add to cart

These categories are not linked to a BPA

Version (include the version you are using, if applicable): 25B

Code Snippet (add any code snippets that support your topic, if applicable):