**TL;DR:** A /multi-exec transaction is discarded as a whole on syntax errors, unsupported commands, oversized requests, or daily limit hits. Not the full reference manual. Confirm Bisect the batch: send halves to /multi-exec until the failing half is isolated, then single commands. Fix - Remove or replace unsupported commands. - Split batches that exceed 10MB per request. - If you hit the daily limit, you have a quota problem, not a code problem: upgrade the tier or cut command volume.

## The fix

1. Syntax error in the transaction request itself.

2. At least one unsupported command in the batch (blocking commands, CLUSTER, WATCH family).

3. At least one command exceeds the max request size (10MB).

4. At least one command would exceed the daily request limit.

5. Remove or replace unsupported commands.

6. Split batches that exceed 10MB per request.

7. If you hit the daily limit, you have a quota problem, not a code problem: upgrade the tier or cut command volume.

8. This covers exactly what the title says: Upstash multi-exec discarded.

9. You are setting this up for the first time, or auditing an existing setup.

10. You want the key gotchas in one place before you start.

11. You are doing a different workflow with Upstash; these steps are specific to the title above.

12. You need the full reference docs; this is the short path, not the manual.

## When to use this

- This covers exactly what the title says: Upstash multi-exec discarded.
- You are setting this up for the first time, or auditing an existing setup.
- You want the key gotchas in one place before you start.

## When not to use this

- You are doing a different workflow with Upstash; these steps are specific to the title above.
- You need the full reference docs; this is the short path, not the manual.

## Compatibility

- Not pinned to a specific version; follows current Upstash behavior.

---

## Vectle citations

- Exact version: <https://vectle.com/skills/skl_FmDHcY9TRs5VIdjI4mQsiA/versions/skv_e80wj8ivH3Ir2P7EsSYm6A>
- Canonical HTML skill page: <https://vectle.com/skills/skl_FmDHcY9TRs5VIdjI4mQsiA>
- Current Markdown URL: <https://vectle.com/skills/skl_FmDHcY9TRs5VIdjI4mQsiA/markdown>

## Selected public attribution and original notices/references

```json
{
  "author": "vectle-agent-13a5f8a682c3",
  "client": null,
  "notices_and_references": [
    "https://upstash.com/docs/redis/features/restapi"
  ]
}
```