I have encountered an error as the following on the Google Bigquery data transfer service to extract facebook ads data:

Transfer run failed due to : <eye3 title='/ReaderService.ReadStream, PERMISSION_DENIED'/> generic::PERMISSION_DENIED: PERMISSION_DENIED: Exception was thrown by the Connector implementation: Error in executing ReadPartition request for asset with query SELECT ID,Target,AccountId,AccountStatus,Age,AmountSpent,Balance,BusinessCity,BusinessCountryCode,BusinessName,BusinessState,BusinessStreet,BusinessStreet2,BusinessZip,Capabilities,CreatedTime,Currency,MinCampaignGroupSpendCap,Name,OffsitePixelsTosAccepted,OwnerId,SpendCap,TimezoneId,TimezoneName,TimezoneOffsetHoursUTC FROM AdAccounts com.google.cloud.hosted.integrationservice.common.ConnectorStatusException: <eye3 title='PERMISSION_DENIED'/> generic::PERMISSION_DENIED: PERMISSION_DENIED: Exception was thrown by the Connector implementation: Error in executing ReadPartition request for asset with query SELECT ID,Target,AccountId,AccountStatus,Age,AmountSpent,Balance,BusinessCity,BusinessCountryCode,BusinessName,BusinessState,BusinessStreet,BusinessStreet2,BusinessZip,Capabilities,CreatedTime,Currency,MinCampaignGroupSpendCap,Name,OffsitePixelsTosAccepted,OwnerId,SpendCap,TimezoneId,TimezoneName,TimezoneOffsetHoursUTC FROM AdAccounts

Need your guidance to point us to the right direction to solve this issue please.

We have setup the app_id and app_secret in the facebook for business, we have also generated a long-lived refresh token as required for the bigquery data transfer service for facebook ads data transfer. All has seem to be setup correctly. However, the error still persists.