Invalid |
Signatures are used as part of the key-based security mechanism that protects the usage quotas associated with customer accounts. This .NET client library would typically generate all signatures automatically, so, unless you have customized the signature-generation process, this type of failure should only come about if a signature is generated using an erroneous security key (e.g. one that was entered with a typo).
The security key of the account would typically be set in the constructor of DegreeDaysApi.