Blob Storage Filters

Question

I have a Storage Account configured with event, and there are filters active on storage account.

when I am uploading files with .txtd, 400 error getting thrown at notify blob completion Api.

IoTHubDeviceClient_LL_AzureStorageNotifyBlobUploadCompletion

If I remove the Subject Begins with field, everything works fine

/blobServices/default/containers/device-data/

I am trying to understand from azure-iot-sdk-c side from where "/blobServices/default/containers/device-data/" data is getting transmitted.

Because with older sdk 1.11.0 its working fine. recently I have updated sdk to 1.14.0 and started to see this issue, after debugging come to events filtering.

Any explanation/help will be appreciated. 

iothub error:

{"statusCode":"400","errorMessage":"Storage endpoint or blob name is invalid","deviceId":"7C:87:CE:EB:82:62","trackingId":"BF2A6968C3794BC287E45B64939B7EE2-G2:-TimeStamp:2024-09-26T10:30:53.820541109Z","fileUploadCorrelationId":"MjAyNDA5MjYxMTQwXzk0NTJiZjMyLTM4NDItNDZjZi1hNGQ3LWM2YmYwZTY4ZjY4ZV83Yzg3Y2VlYjgyNjJfdHJlbmRfMjB5XzAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwX2lkeDAwdG8yMF8yMDI0MDkyNi0xMjMwMzkuZHh0ZF92ZXIyLjA=","fileUploadStatusDescription":null,"fileUploadFilename":"7c87ceeb8262_trend_20y_00000000000000000000000000000000_idx00to20_20240926-123039.dxtd","fileUploadStatusCode":"","maskedIpAddress":"106.79.198.XXX","isSuccess":"False"}