Any ideas why I might be getting the following error with RBS/Worldpay setup in test mode? Error on payment page is...
Secure Payment Page
Sorry, there was an error in processing this transaction:
The information sent from the merchant's site is invalid or incomplete. Please send the following information to the merchant:
The transaction cannot be processed due to one or more of the following:
* the installation ID field is blank or contains invalid characters
* a different submission protocol is required. For instance, a more secure submission may be required
* the installation number is invalid
Server information 22/Nov/2010 13:00:15 Server ID xxxxxxxxxxxxx (WPReq-xxxxxxxxxx)
Secure Payment Page
Sorry, there was an error in processing this transaction:
The information sent from the merchant's site is invalid or incomplete. Please send the following information to the merchant:
The transaction cannot be processed due to one or more of the following:
* the installation ID field is blank or contains invalid characters
* a different submission protocol is required. For instance, a more secure submission may be required
* the installation number is invalid
Server information 22/Nov/2010 13:00:15 Server ID xxxxxxxxxxxxx (WPReq-xxxxxxxxxx)
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