errorCode property
Code for the error.
A value of 0 means that the error is internal to the Flutter plugin. All other error codes come from the corresponding Android and iOS platform objects. See https://developers.google.com/admob/ump/android/api/reference/com/google/android/ump/FormError.ErrorCode, https://developers.google.com/admob/ump/ios/api/reference/Enums/UMPFormErrorCode, and https://developers.google.com/admob/ump/ios/api/reference/Enums/UMPRequestErrorCode for platform specific error code descriptions.
Implementation
final int errorCode;