Let me start by listing documents.

Let me read all three documents.

Let me analyze.

Payroll record: gross_pay 2300.95, payroll_month 2026-02, allowed_deduction 272.78.

Contract gross_pay: 1800.95. This differs from payroll gross_pay 2300.95. So there's a conflict under R7 step 4.

Amendment: gross_pay 2300.95, approved true, effective_month 2026-03. Payroll month is 2026-02. The amendment's effective month (2026-03) is later than the payroll month (2026-02). So it does not resolve the conflict (effective month must be no later than payroll month).

Wait, let me re-read R9: "It resolves a contract conflict only if it is approved, its effective month is no later than the payroll month, and its amount equals the payroll record's gross pay."

Effective month 2026-03 is later than payroll month 2026-02. So it does not resolve. So return clarify CONFLICTING_GROSS_PAY citing R7 and R9.

Wait, but let me double-check. The amendment amount equals payroll gross pay (2300.95). Approved true. But effective month is future (2026-03 > 2026-02). So it doesn't resolve. So unresolved contract conflict → clarify, reason_code CONFLICTING_GROSS_PAY, citing R7 and R9.

Let me confirm the order of checks: R7 step 4 is the conflicting gross pay check. Steps 1-3: gross_pay present, payroll_month present, month 2026-02 has a reference row (first-half covers... need to check). Let me check reference rows anyway.

Actually the month must have a reference row. Let me lookup first-half and second-half.

Payroll month 2026-02. First-half months are 2026-01 through 2026-06. So 2026-02 falls in first-half. Good, a reference row exists.

Now check the conflict: contract gross_pay 1800.95 ≠ payroll gross_pay 2300.95. Amendment doesn't resolve (effective month future). So clarify with CONFLICTING_GROSS_PAY, citing R7 and R9.

Let me produce the JSON. Fields: decision, reason_code, clauses, and optional explanation.

The allowed fields for clarify: decision, reason_code, clauses. Plus optional explanation.

Explanation should name the unresolved blocker and ask for its resolution.

Let me start by listing documents.

Let me read the documents.

Now, let's determine the situation.

Payroll record: gross_pay 2300.95, payroll_month 2026-02, allowed_deduction 272.78.

Contract gross_pay: 1800.95, differs from payroll gross_pay 2300.95. So there's a conflict under R7 step 4.

Amendment: gross_pay 2300.95, approved true, effective_month 2026-03. But effective month must be no later than the payroll month (2026-02). 2026-03 > 2026-02, so it's a future amendment → does not resolve conflict.

So unresolved contract conflict → return decision "clarify", reason_code "CONFLICTING_GROSS_PAY", citing R7 and R9.

Wait, let me double-check. R7 step 4: "If optional contract_gross_pay is present and differs from gross_pay, neither source takes precedence unless an approved amendment resolves it under R9. Otherwise return decision: clarify and reason_code: CONFLICTING_GROSS_PAY, citing R7 and R9."

The amendment is future (effective 2026-03 > 2026-02), so it does not resolve. So we return clarify.

Let me verify the order of checks: 1 missing gross_pay - present. 2 missing payroll_month - present. 3 month without reference row - 2026-02 is covered (2026 covered). 4 conflict - yes.

So answer: decision clarify, reason_code CONFLICTING_GROSS_PAY, clauses [R7, R9], explanation naming unresolved blocker and asking for resolution.

Let me confirm the amendment doesn't resolve. Effective month 2026-03 is later than payroll month 2026-02 → future → doesn't resolve. Correct.

So final JSON.

The payroll month 2026-02 is covered by the first-half reference row (months 2026-01 through 2026-06). So no NO_APPLICABLE_REFERENCE.

The conflict: contract gross_pay 1800.95 differs from payroll gross_pay 2300.95. Amendment is future (2026-03 > 2026-02), so it doesn't resolve. Return clarify CONFLICTING_GROSS_PAY.

Final answer.

Let me start by listing documents.

Let me read all three documents.

Let me analyze.

Payroll record: gross_pay 2300.95, payroll_month 2026-02, allowed_deduction 272.78.

Contract gross_pay: 1800.95. Contract differs from gross_pay (2300.95). So there's a conflict. The amendment: gross_pay 2300.95, approved true, effective_month 2026-03. 

R9: resolves contract conflict only if approved, effective month is no later than payroll month, AND amount equals payroll record's gross pay.

Effective month 2026-03 is later than payroll month 2026-02. So the amendment does NOT resolve the conflict (future amendment). So return clarify, reason_code CONFLICTING_GROSS_PAY, citing R7 and R9.

Wait, let me double check. Amendment effective_month 2026-03 > payroll month 2026-02, so it's future. Does not resolve. So conflict unresolved → clarify.

Let me verify order of checks in R7: 1 missing gross, 2 missing month, 3 no reference row, 4 conflicting gross pay. All fine until 4. So CONFLICTING_GROSS_PAY.

So answer: decision clarify, reason_code CONFLICTING_GROSS_PAY, clauses [R7, R9], explanation.

Let me confirm month 2026-02 has a reference row. It's within 2026, so covered. Actually check: only 2026 covered. 2026-02 is covered. So step 3 passes.

So final answer is a clarification.

Let me produce JSON.

Fields allowed for clarify: decision, reason_code, clauses. Optional explanation.

I don't need calculate for this. But let me just double-check that no reference lookup needed. The conflict check happens before calculation. Yes.

Answer.

Month 2026-02 is covered (first-half covers 2026-01 through 2026-06). So step 3 passes. Then step 4: contract conflict.

Contract gross 1800.95 ≠ payroll gross 2300.95. Amendment approved, effective 2026-03 which is later than payroll month 2026-02 → future → does not resolve. So unresolved conflict → clarify CONFLICTING_GROSS_PAY citing R7 and R9.

Final.