Confirm a 2Checkout order reached Dynamics GP

**Objective:** Trace 2Checkout order `{order-reference}` into Dynamics GP and report whether a matching sales document exists and whether the amounts agree, looking back `{lookback-days}` days (default 60) from the order date.

**Step 1: Read the order in 2Checkout**

Call `2checkout-get-order` and find the order whose `reference-number` or `external-reference` equals `{order-reference}`. If none is found, report that and stop. Note `billing-first-name`, `billing-last-name`, `order-date`, `gross-discounted-price`, `currency`, `status` and `test-order`. Call `2checkout-get-orderitem` and keep the lines with the same `reference-number` to list the product codes and quantities.

**Step 2: Find the document in Dynamics GP**

Call `dynamics-gp-get-rm-sales-trx` with `customer-po-number` = the order reference, and `document-date.from` = `order-date` minus `{lookback-days}` days. If nothing returns, call `dynamics-gp-get-rm-trx` with the same `customer-po-number` and date window. If still nothing, report the order as present in 2Checkout and absent from Dynamics GP, with the customer name and amount, and stop.

**Step 3: Report**

Show the order (reference, date, status, amount, currency), each matching GP document (`sop-number` or `document-number`, `document-date`, `document-amount`, `posting-status` or `void-status`), and the difference between `gross-discounted-price` and `document-amount`. Say Match, Differs, or Currency not comparable.

**Rules & Guidelines:**

* `2checkout-get-order` and `2checkout-get-orderitem` are on the 2checkout server; `dynamics-gp-get-rm-sales-trx` and `dynamics-gp-get-rm-trx` are on the dynamics-gp server.
* Read-only. Do not call `2checkout-order-cancel`, `2checkout-order-refund`, `dynamics-gp-rm-sales-trx-add`, `dynamics-gp-rm-trx-add` or `dynamics-gp-rm-trx-note`.

**Validation:**

* If `test-order` is true, say so: a missing GP document is expected.
* If the amounts differ by less than 0.01, treat them as a match.