The way errors are communicated back to the client varies depending on the type of error that occurs. In this section, we focus only on the error conditions that are unique to the Amazon Nova model. The three primary types of errors you'll want to handle in your application code are input validation errors, Responsible AI (RAI) input deflection errors, and RAI output deflection errors.
Input validation: Input validation errors occur when you
use an unsupported value for an input parameter. For example, an out-of-bounds value for
temperature, or incorrect format of the input image. All input validation
errors are expressed as a ValidationException which
contains a message string describing the cause of the problem.
RAI input deflection errors occur when any of the input text values or images are determined to violate the AWS Responsible AI policy. These errors are expressed as a ValidationException with one of the following messages:
-
Input text validation message: "This request has been blocked by our content filters. Please adjust your text prompt to submit a new request."
-
Input image validation message: "This request has been blocked by our content filters. Please adjust your input image to submit a new request."
-
Input Video validation message: "This request has been blocked by our content filters. Please adjust your input video to submit a new request."
RAI output deflection errors occur when an the output is generated but it is determined to
be misaligned with the AWS Responsible AI policy. When this occurs, an exception is not
used. Instead, a successful response is returned, and it's structure contains an
error field which is a string with one of the following values:
-
Output text validation message: "The generated text has been blocked by our content filters."
