How should I communicate to REST API client "query was completed with errors"? [duplicate]

This question is an exact duplicate of:

• What is the best way to create REST API error response model and error codes system? 2 answers

I have a resource that accepts array of numbers. Each number is proceed interdependently, and computation fails are expected. How should I communicate to API client "some of your numbers couldn't be proceed, but rest was successfully forwarded"?