4f0a13a801
Move canonical knowledge for Microsoft-owned review domains into the Microsoft layer and document the skill/knowledge co-location policy. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Co-authored-by: Jesper Schulz-Wedde <jesper.schulzwedde@microsoft.com> Copilot-Session: 2a6ea875-d38e-4f30-aadb-0d606f9be231
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Do not call ChangeCompany inside a per-row loop
Contributions welcome — open a PR to refine or extend this article.
Description
ChangeCompany retargets a record variable to another company's data and drops the in-memory caches bound to the previous company. Calling it once per row in a multi-company scan therefore pays a cache reset on every iteration, even when consecutive rows share a company. Agents treat ChangeCompany like a filter. It is an isolation switch.
Best Practice
Group work by company. Call ChangeCompany once per distinct company, then FindSet/Get that company's rows. If the record variable is reused afterward, call ChangeCompany() without a company name to redirect it back to the current company.
See sample: changecompany-in-loop-drops-caches.good.al.
Anti Pattern
repeat Rec.ChangeCompany(Buffer.Company); Rec.Get(Buffer."No."); until Buffer.Next() = 0 when Buffer is not ordered by company, or even when it is — if ChangeCompany still runs every row. The signal is ChangeCompany inside repeat/while keyed by a document line rather than by a company loop.
See sample: changecompany-in-loop-drops-caches.bad.al.