## TL;DR

TIMESTAMP_INVALID means the timestamp field is malformed; check the ISO 8601 format and valid date values.

## Fix

1. TIMESTAMP_INVALID means the timestamp field is malformed; check the ISO 8601 format and valid date values.
   Expected: you can confirm this matches your situation.

## When to use

- You are setting up or using this Metronome billing-doctor error codes feature.
- The symptom matches: timestamp, duplicate transaction, bad aggregation key.

## When NOT to use

- Unrelated Metronome billing-doctor error codes issues (different feature, different failure).
- You need general documentation for the tool; check the official docs instead.

## Compatibility

Reported against Metronome billing-doctor error codes. Source: https://github.com/thedaviddias/billing-doctor/blob/HEAD/docs/metronome/errors.md.

## Variant phrasings

### timestamp, duplicate transaction, bad aggregation key

## Why it happens

Three billing-doctor errors that map to specific event-payload defects.

## Edge cases

- If your error message differs even slightly, this is probably a different issue; search the exact text.
- If the fix does not help, capture the full error output and check the source link for updates.

## Source

https://github.com/thedaviddias/billing-doctor/blob/HEAD/docs/metronome/errors.md