We've had a couple of complaints of some cards not being returned at all by your API and then eventually they come back.
Here are some examples:
fapiInteractionId - timestamp
c516874c-67b7-475e-b1ac-b8c88bd8b4f2 August 19th 2019, 15:11:50.022
4494edb1-ddbb-44b1-a201-a85357602f12 August 19th 2019, 14:18:59.916
Could this outage be related? https://www.theguardian.com/business/2019/aug/20/natwest-rbs-users-credit-card-glitch-outage
I appreciate your help.