Looking for some advice. I need the ability for ~50 subcontractors to be able to submit repair transactions to me in NetSuite. I have a fair amount of filtering and constraints that need to be imposed on each transaction they submit, so I need access to several other records in the NetSuite Database. I am trying to make this work in the Vendor Center with a custom transaction type, but it seems very limited, and I'm not having much luck getting the proper fields to display. Is it possible to make an external SuiteLet with individual logins? Can a Suitelet be put on the Customer or Vendor Centers? Is there a better way to do this without acquiring 50 NetSuite seats?

You can create a SL and pair it with a custom record to handle user “authentication”. The SL would capture username and password and validate against the custom record and once validated proceed with your custom business logic to expose only the data they need access to. The SL would need to be available without login to make it accessible.

You should be able to create a role with permission for the custom record, and then create a Suitelet that runs as that role and is deployed to Vendor Center.

@michoel i agree with you. I have done it your way for partner and vendor portal in the past