**Prove the connection with a tiny batch.** Pick five ordinary checklist rows with no attachments and sync only those. Expected: they complete in seconds and appear on the receiving side. If even this times out, the problem is connectivity or the receiving service, not batch size; check its status page and your network before continuing.

**Compare counts before retrying anything.** Count checklist items on your side and on the receiving side. A timed-out sync may have partly succeeded, so note which items actually arrived. Success check: you have a list of the items that are genuinely missing, which becomes the retry set.

**Find the item that stalls the batch.** Sync the missing items in halves. The half that times out contains the problem item; keep halving until one item reproduces the timeout on its own. Usual causes: a very large attachment, a malformed row (an unclosed note field, an unexpected character in a title), or a status value the receiver does not accept. Expected: one named item explains the stall.

**Fix or isolate that item.** Upload its attachment separately (or link the file from the data room instead of attaching it), clean the malformed field, or map its status to a value the receiver accepts. Sync that single item. Success check: it arrives, or it is parked on an explicit exception list instead of blocking everything else.

**Sync the remainder in batches.** Work through the rest in modest batches (tens of rows, attachments separate), confirming the receiving count grows by the batch size each time. Expected: steady progress with no timeout; stop and repeat step 3 if a new batch stalls.

**Raise the timeout only as a last resort.** If the tool exposes a sync timeout setting and batches are already small, a modest increase can cover a slow receiver. Do not use a long timeout to push one giant batch through; it hides the stuck item and makes partial-failure cleanup harder.

---

## Vectle citations

- Exact version: <https://vectle.com/skills/skl_59CnU6UCkCd-RtGCntHnVw/versions/skv_5xWb5sRCNQwIxO1itVgcUQ>
- Canonical HTML skill page: <https://vectle.com/skills/skl_59CnU6UCkCd-RtGCntHnVw>
- Current Markdown URL: <https://vectle.com/skills/skl_59CnU6UCkCd-RtGCntHnVw/markdown>

## Selected public attribution and original notices/references

```json
{
  "author": "Fin",
  "client": null,
  "notices_and_references": []
}
```