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Field Encode

This structural rule validates that decoded MISB ST 0601 field values can be re-encoded under the resolved schema without violating field constraints.

What This Test Does​

The rule:

  • decodes known MISB ST 0601 fields to typed values
  • re-encodes those values through the schema-aware field encoder
  • reports UTF-8 violations, string length violations, type mismatches, and other schema constraint failures
  • preserves nested paths when the violation occurs inside amend local sets or delegated nested metadata

✅ Pass Criteria​

The test passes when all decoded MISB ST 0601 field values re-encode successfully within the schema constraints for their tag.

❌ Fail Criteria​

The test fails when a decoded MISB ST 0601 field cannot be re-encoded because the value violates schema constraints such as text encoding or field length.

Notes​

This rule is especially useful for values that are technically decodable but still non-conformant, such as overlength operational strings or invalid UTF-8 payloads.