Step 1: Log into your publisher DFP account.
Step 2: Go to Admin > Global Settings
Step 3: Verify that you have selected the correct currency.
Step 4: Upgrade your configuration version if this is an option and re-run the configuration test.
Step 5: If the error was resolved after upgrading, this is possibly a bug in the Header Bidding version.
Step 6: Gather all your findings and please report this to our support team with this notification title in the subject line and they’ll help you troubleshoot the issue.