@kapa.ai I am getting this issue "externalMessage" : "During the sync, the following streams did not sync successfully: average_session_length: MessageRepresentationAirbyteTracedErrors(\"'GET' request to 'https://amplitude.com/api/2/sessions/average?start=20250401&end=20250415' failed with status code '403' and error message: 'Date too far back'. Request (body): 'None'. Response (body): '{'error': {'http_code': 403, 'type': 'date restricted', 'message': 'Date too far back', 'metadata': {'details': '2025-04-01 is before cutoff date of 2025-04-02', 'cutoff_date': '2025-04-02'}}}'. Response (headers): '{'Date': 'Fri, 03 Apr 2026 123048 GMT', 'Content-Type': 'application/json; charset=UTF-8', 'Transfer-Encoding': 'chunked', 'Connection': 'keep-alive', 'server-timing': 'dash;dur=113.7', 'x-amzn-trace-id': 'Root=1-69cfb2f8-15ab9eea15302ea21ebbc303', 'x-content-type-options': 'nosniff', 'cache-control': 'no-cache, no-store, must-revalidate', 'pragma': 'no-cache', 'expires': '0', 'content-encoding': 'gzip', 'strict-transport-security': 'max-age=31536000; includeSubDomains; preload;', 'x-frame-options': 'SAMEORIGIN', 'set-cookie': 'SERVERID=; Expires=Thu, 01-Jan-1970 000001 GMT; path=/'}'.\")",

The error you're encountering is a 403 "Date too far back" response from Amplitude's API. This means the

start

date you're requesting (

2025-04-01

) is before Amplitude's data retention cutoff date (

2025-04-02

). This is a data retention limitation enforced by Amplitude's API — they do not allow querying data older than their cutoff date. What you can do 1. Update your Replication Start Date: In your Airbyte connection settings for the Amplitude source, update the Replication Start Date to a date that is within Amplitude's retention window (i.e., on or after the cutoff date). [Amplitude connector docs] 2. Check Amplitude's data retention policy: Amplitude enforces retention limits on their Dashboard REST API (which the

average_session_length

stream uses). If your configured start date falls before the cutoff, the sync will fail with this 403 error. Additional context The

average_session_length

stream uses Amplitude's Dashboard REST API endpoint

/2/sessions/average

. The knowledge sources note that Amplitude's Export API and Dashboard REST API have different behaviors and limitations. [source-amplitude contributing] Unfortunately, the knowledge sources do not describe a built-in mechanism in the Airbyte Amplitude connector to automatically skip dates before the cutoff. The recommended fix is to manually adjust your start date in the connector configuration to be within Amplitude's allowed retention window. 👍 0 button 👎 0 button ℹ️ Tip: Mention @kapa.ai in the thread for follow-ups or DM the app for 1-to-1 help.

is it only for average_sessions_length_stream or all streams @kapa.ai

Based on the knowledge sources, the 403 "Date too far back" error due to Amplitude's data retention cutoff is specifically relevant to streams that use the Dashboard REST API, which includes: • Average Session Length (

/2/sessions/average

) • Active Users Counts (also uses the Dashboard REST API) The

average_session_length

and

active_users

streams both use Amplitude's Dashboard REST API and are incremental streams. [source-amplitude contributing] The Events stream, however, uses a different API — Amplitude's Export API — which has different (and largely undocumented) rate limits and behaviors. [source-amplitude contributing] The other streams (Annotations, Cohorts, Events List) are not incremental and do not use date-range parameters in the same way, so they are less likely to be affected by this specific date restriction error. That said, the knowledge sources do not explicitly document Amplitude's retention cutoff policy for each individual stream. I'd recommend checking Amplitude's API documentation for the specific retention limits per endpoint, and ensuring your Replication Start Date is set within the allowed window for all date-range-based streams. 👍 0 button 👎 0 button ℹ️ Tip: Mention @kapa.ai in the thread for follow-ups or DM the app for 1-to-1 help.