bcquality/community/knowledge/agents/agent-setup-table-keyed-by-user-security-id.md
Stefano Demiliani 2d0913568e feat(community/agents): add AL agent quality guidance
- add 20 agent knowledge rules with good and bad AL samples
- clarify setup dialog shape, temporary persistence, permissions, profiles, instructions, capability registration, and interface wiring
- add the community-owned AL agents review skill
- make review fixture discovery layer-aware with custom, community, and Microsoft precedence
- document layer-aware evaluation behavior
2026-08-23 22:10:10 +02:00

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---
bc-version: [27..]
domain: agents
keywords: [user-security-id, setup-table, primary-key, agent-instance, guid]
technologies: [al]
countries: [w1]
application-area: [all]
---
# Agent setup tables are keyed by User Security ID
## Description
Each agent instance is a user. Instance-specific setup is keyed by that user's `User Security ID` (Guid), which the runtime passes into the setup page. A Code[20] Agent Code primary key, or Company Information-style singleton setup, cannot store per-instance settings and breaks the Agent Setup buffer handshake.
## Best Practice
Give the setup table a Guid field `User Security ID` as the clustered primary key. Other settings are attributes of that key. When the page opens, `Get` or insert by the Guid the Agent Setup part already holds.
See sample: `agent-setup-table-keyed-by-user-security-id.good.al`.
## Anti Pattern
A setup table keyed by Code, Integer, or with no Guid user key, then mapping one row to every instance. Detection signal: source table of the agent setup page whose primary key is not `User Security ID`.
See sample: `agent-setup-table-keyed-by-user-security-id.bad.al`.