Verify if this error is correct.
Step 1: Go to https://tools.monetizemore.com/db-admin/db_tasks_task/
Step 2: Search for your publisher’s DFP Network ID and check the latest request.
Step 3: You should see the “max_price” which is the same as ‘bid cap’.
Step 4: Find out if the expected bid cap is true by logging into the publisher’s DFP account.
Step 5: Open the last PubGuru Header Bidding order (the one with the biggest #-xxx).
Step 6: Check the line item with the highest CPM rate as this is your bid cap.
Step 7: Once validated, please report this to our support team with this notification title in the subject line and they’ll help you troubleshoot the issue.