This problem happens when you don't include Form 1095-A, Health Insurance Marketplace Statement. It also happens when the information on the form doesn't match what the IRS has in their database. When something's missing or mismatched, your return gets rejected.
Visit this link to learn more about other situations that may have caused the error, and how to correct it:
How do I fix e-file reject F8962-070?
Health Insurance Marketplace Statements | Internal Revenue Service
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