Correct stock with a reason, without driving it negative

**Objective:** Adjust stock of `{item-number}` at site `{site-id}` by `{quantity-change}` units for reason `{reason}` (default ask), after the user confirms.

Pass `{company}` as `company` on every call (if it is empty, omit `company` and the default company is used). Pass a generous `max-records` (1000). If a result comes back with exactly that many rows, say the result may be truncated.

**Step 1: Item and site**

Call `dynamics-gp-get-iv-item` by `item-number` and `dynamics-gp-get-iv-site` by `site-id`. Stop if either is missing or the site is `inactive`. If the item is lot or serial tracked (`item-tracking-option`), stop: these tools cannot record lot or serial numbers.

**Step 2: Stock**

Call `dynamics-gp-get-iv-item-quantity` by `item-number` and find the row for `{site-id}`. For a decrease, stop if it would take on hand below allocated or below zero.

**Step 3: Confirm**

Ask for the document number and batch number. Value = quantity change times `current-cost`. Show the user exactly what will be written, field by field, and ask for explicit confirmation. Do nothing further without a clear yes. Show item, description, site, on hand before and after, quantity change, unit cost, value, reason, document number, batch.

**Step 4: Write**

1. Call `dynamics-gp-iv-inventory-transaction-add` once with `document-type` (adjustment), `document-number`, `document-date` today and `batch-number`. Do not set `post-to-g-l` unless the user asked.
2. Only if that succeeded, call `dynamics-gp-iv-inventory-transaction-add-line` once with `document-type`, `document-number`, `item-number`, `transaction-quantity` = `{quantity-change}`, `transaction-location` = `{site-id}`, `unit-cost` and `reason-code` when one fits.

If the line fails after the header succeeded, tell the user an empty adjustment document exists. Do not retry a failed write automatically. Report the error exactly as returned.

**Step 5: Verify**

Call `dynamics-gp-get-iv-inventory-transaction` by `document-number` and report what was stored.

**Rules & Guidelines:**

* The only write tools this prompt may call are `dynamics-gp-iv-inventory-transaction-add` and `dynamics-gp-iv-inventory-transaction-add-line`, once each, after Step 3.

**Validation:**

* If `{quantity-change}` is zero or not a number, stop and ask again.