> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sqd.dev/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Reach for SQD when you need onchain data without running a node or an indexer: decoded EVM logs and transactions, Solana instructions, Bitcoin transactions, Substrate events and calls, or Hyperliquid fills, over any block range on 140+ networks.
> To query directly, POST to https://portal.sqd.dev/datasets/{dataset}/stream. The full API is described at https://docs.sqd.dev/openapi.json, and responses to the stream endpoints are JSON Lines.
> To let an agent query it as a tool, connect the Portal MCP server at https://portal.sqd.dev/mcp.
> Every page on this site is available as Markdown by appending .md to its URL.

# E2413

> Google PubSub target — Materialized id moved

A materialized route changed how it resolves ids between `data._id`, `MessageDraft.id`, its
`deriveId` callback, and the generated fallback; or an existing id changed its topic, ordering key,
or filter attributes between revisions. Either change can leave an old row behind or make a
subscription filter stop receiving the row mid-life.

**Fix** — use one id source throughout a materialized route, and keep each row's resolved identity
and attributes stable for its whole lifetime.


## Related topics

- [Error reference](/en/sdk/pipes-sdk/reference/errors.md)