Invalid gateway merchant on fundingsources/paymentcards/create

[codewhale]

Hello,

In the sandbox environment I'm getting "General gateway exception: Invalid gateway merchant. Error Code:400038" when trying to create a PaymentCard FundingSource for a test user.  Don't see any obvious process for how to fix this in the docs or error pages but other developer community postings[1][2] imply something needs to be done on the Marqeta side ('enable Marqeta.JS'?).  Can someone comment publicly or reach out privately on how I can do this for my sandbox environment?   FTR, the "contact us" page on the main Marqeta website doesn't work with gmail.com addresses (not "work" enough).

Thanks.

[1] https://community.marqeta.com/t5/discussions/client-access-token-creation-403001-error/m-p/442

[2] https://community.marqeta.com/t5/discussions/i-have-contacted-sales-2-weeks-and-i-ve-not-had-a-singl...

[reneemq]

Hi @codewhale .  Thank you for raising this.  Let me look into this and be back. 

[reneemq]

Hi @codewhale !  Thanks so much for your message. Unfortunately, that functionally is not available in the public sandbox at this time.