PranavNagrecha OmniStudio LWC OmniScript Migration
Salesforce is deprecating the Visualforce OmniScript runtime. Orgs must switch each OmniScript to the LWC runtime via the 'Run OmniScripts in LWC' setting and retest. Third-party templates and embedded custom VFs need replacement LWCs. This skill covers inventory, parity testing, and the rollout sequence.
Adoption Signals
Any org still using VF-mode OmniScripts; required by the deprecation timeline.
- Pre-migration audit when an OmniScript embeds custom Visualforce in a step or footer template.
- Required when LWC OmniScript runtime parity gaps (e.g., specific Action types) must be evaluated before the cutover.
Recommended Workflow
- Inventory OmniScripts via OmniScript object query; note Type, Sub-Type, Active version.
- Enable 'Run OmniScripts in LWC' at org level; each OmniScript can still opt out temporarily.
- For each script: activate LWC mode; run QA scenarios; fix any parity gaps (custom VF → LWC rewrite).
- Update embedded scripts: pages that host OmniScripts via
<c-omniscript>LWC instead of VF include. - Deprecation cutover: disable VF mode globally; remove unused assets.
Key Considerations
- Some template types (signature pad, legacy chart) need custom LWC rewrite.
- Styles differ subtly in LWC mode; QA designers carefully.
- LWC runtime is faster but strict about async patterns — some VF-only tricks won't port.
- Don't justify the migration with a borrowed percentage — the widely-quoted "30–60% faster" is attributable to nobody. Justify it on supportability (the AngularJS runtime is no longer supported) and measure your own scripts before and after if a number is wanted.
Worked Examples (see references/examples.md)
- Phased LWC cutover — 80 OmniScripts
- Custom VF replacement — Signature capture inside script
Common Gotchas (see references/gotchas.md)
- Style drift — Colors off after migration.
- Async timing — Remote action timing different in LWC.
- No opt-out left — Business outage when last VF-only script flips.
Top LLM Anti-Patterns (full list in references/llm-anti-patterns.md)
- Big-bang cutover without QA
- Ignoring deprecation timeline
- Custom VF assets left after migration
Official Sources Used
- OmniStudio Developer Guide — https://developer.salesforce.com/docs/atlas.en-us.omnistudio_developer.meta/omnistudio_developer/
- OmniStudio for Salesforce — https://help.salesforce.com/s/articleView?id=sf.os_omnistudio_for_salesforce_overview.htm
- OmniScript to LWC OSS — https://developer.salesforce.com/docs/atlas.en-us.omnistudio_developer.meta/omnistudio_developer/os_migrate_from_vf_to_lwc.htm