If you are an MVNO which has subscribed to capped bundles, there are several points to check. Firstly, check that the subscriber has remaining balance in their bundle resources (these are decremented - once it his 0, they're capped!). Secondly, check with that they're located in a country which is allowed in the bundle. Roaming voice, SMS and data are blocked in certain zones by default to prevent bill shock. The subscriber must purchase a Daily Roaming Pass to have access to data by sending an SMS to 1250.  Otherwise, you can provision the subscriber to “Tiered data” to give them access to open-bar data nationally and in roaming.