What identification document does the field legal_entity.personal_id_number designate?

Question

I am trying to create a managed account for my user on Stripe Connect. I have been receiving different requests for different documents in the verification.fields_needed one at a time. I supply the one it says they need and then I get a new value in this field. So, my question(s) are:

1) Is there an exhaustive list of documents that are required for verification if the legal entity's country is US, so I can supply them to the API once and for all and not have to look at the additional documents requested in the Stripe response and send back another request? This makes it difficult to automate the process.

I referred to this document: https://stripe.com/docs/connect/required-verification-information

And supplied everything it asked for, but as you can see, legal_entity.personal_id_number isn't on that list and there is also no explanation for the meaning of this field.

2) What identification document does legal_entity.personal_id_number represent? The newest response I have received says it needs this to complete verification.

Answer 1

Personal_id_number in the US is the full social security number, its only needed if the account is unable to be verified using the last 4 digits or if the account hits $20k in volume which would require Stripe to fill out a 1099K

https://support.stripe.com/questions/What-is-the-process-for-verifying-managed