ecommerce Licence

Hi Experts

i am working on channel management. while working on channel partner (chm-pm) role i brought the transactions like service order, quotation and sales order through custom navigation profile to avoid the use ecommerce.

Does it have B2B licence constraints?

Can i use these transactions and partner portal with only B2B user license is functionality.

please guide and provide the related link if possible.

Regards

sc