Unable to create routed organisation network

I've just had an issue at a customer when they were unable to create any Routed Organization Networks.

Direct and Internal only networks were created fine.

The error that was shown in vCD referred to vShield Manager, and error 401, unauthorized.

I'm unsure what caused the issue, although there were issues with the environment as the ESX boot LUNs had been disconnected.

It appeared that the credentials for vCD to authenticate to the vShield Manager have in someway been corrupted.

So, I connected to vCD, selected the properties of the the vCenter server from the Manage & monitor tab, and re-entered the administrator credentails for vShield Manager.