Glen Mazza's Weblog

I've found in rare instances that access token requests to Marketing Cloud fail with a MC-side 500 system error with little extra detail provided. In such cases the ETClient in the FuelSDK would throw a generic EtSdkException for the client to handle. Our logging has shown that a second access token request immediately thereafter would usually be successful.

To make it easier for FuelSDK clients to trap and recover from this specific error, in my FuelSDK fork I created a new ETTokenRequestException, subclassed from the current ETSdkException, that the ETClient now instead throws. Subclassing from the current exception maintains backwards compatibility for current clients of the library while allowing them to update as they wish.