# ADL validity codes now directly linkable

**Category:** [ADL](https://discourse.openehr.org/c/adl/40)
**Created:** 2022-11-10 20:35 UTC
**Views:** 397
**Replies:** 0
**URL:** https://discourse.openehr.org/t/adl-validity-codes-now-directly-linkable/3176

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## Post #1 by @thomas.beale

For those who care about ADL tooling and have implemented or use the AOM, for example in Archie, you will know that the AOM2 spec defines numerous validity codes [like these](https://specifications.openehr.org/releases/AM/latest/AOM2.html#_validity_rules_c_attribute).

If you are using an Archetype modelling tool, and it reports a validity error code like VSONCO (one that we are just upgrading), you can now use the codes as direct anchors added to the URL of the spec, i.e. 
https://specifications.openehr.org/releases/AM/latest/AOM2.html#VSONCO

Tool builders might want to use this trick to build help / info links when the report such errors.

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**Canonical:** https://discourse.openehr.org/t/adl-validity-codes-now-directly-linkable/3176
**Original content:** https://discourse.openehr.org/t/adl-validity-codes-now-directly-linkable/3176