bcquality/microsoft/knowledge/style/tooltip-required-on-page-fields.md
Jesper Schulz-Wedde a9f3c50863 Regenerate microsoft/knowledge from upstream BCApps instructions
The previous LLM-generated knowledge files contained factual
hallucinations. The most visible was the claim that `FindFirst` /
`FindLast` "forces a full-table scan" on an unfiltered record - it does
not; those APIs return a single row via the current key.

Other inaccuracies the audit found and fixed:

* `FindSet(true)` was described as "taking a LockTable". The correct
  upstream phrasing is that `FindSet(true)` sets
  `ReadIsolation::UpdLock` on the read. UpdLock and LockTable are
  related but distinct mechanisms.
* The list of production-scale tables had been invented beyond the
  upstream source (e.g. "Detailed Cust. Ledg. Entry") without a
  citation. The regenerated list matches the ten tables upstream lists
  with their P95 row counts.
* `SetLoadFields` guidance had been augmented with an extra mechanism
  claim ("the database resolves the filter using the index without
  hydrating the value") not present in upstream.

Approach: full regeneration of `microsoft/knowledge/` from the six
upstream BCApps Code Review instruction files, with Microsoft Learn /
the AL language reference as a secondary source. Every claim in every
regenerated file is anchored to a verbatim upstream quote (or a Learn
URL); the audit trail lives in artifacts/trace-<domain>.json on the
session workspace.

The PR #11 transaction/error-handling cluster is preserved verbatim:

* performance/understand-implicit-transaction-boundary.md
* performance/codeunit-run-as-atomic-sub-operation.{md,good.al,bad.al}
* performance/codeunit-run-requires-prior-commit-inside-transaction.{md,good.al,bad.al}
* performance/use-tryfunction-for-error-catching-not-rollback.{md,good.al,bad.al}
* performance/avoid-commit-inside-loops.{md,good.al,bad.al}
* security/commitbehavior-attribute-scopes-explicit-commits.{md,good.al,bad.al}
* testing/transactionmodel-attribute-governs-test-transactions.{md,good.al,bad.al}

These articles already cite Microsoft Learn and were carefully
cross-referenced; the regeneration skips their topics rather than
duplicating them.

File counts after regeneration:

  performance   35 .md  (5 preserved + 30 new)
  privacy       17 .md
  security      18 .md  (1 preserved + 17 new)
  style         33 .md
  testing        1 .md  (preserved)
  ui            19 .md
  upgrade       18 .md

Total 141 atomic knowledge files, each strictly one rule. All pass
.github/scripts/validate_frontmatter.py with 0 errors and 0 warnings.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-05-21 09:53:09 +02:00

1.5 KiB

bc-version domain keywords technologies countries application-area
all
style
tooltip
page-field
aa0218
codecop
accessibility
specifies
al
w1
all

Every page field needs a ToolTip (CodeCop AA0218)

Description

CodeCop AA0218 requires a non-empty ToolTip property on every field control on a page. The tooltip is what users see on hover and is what screen readers announce; an empty or missing tooltip removes a piece of UI affordance that is part of BC's accessibility baseline. AppSource technical validation rejects pages with missing tooltips. The companion rules AA0219 and AA0220 push the wording further — tooltips should describe what the field shows, conventionally starting with 'Specifies …', though 'Shows …' and similar variants are acceptable when they clearly describe the field's purpose.

Acceptable exceptions: table fields inside Upgrade, Migration, HybridBC14, HybridSL, and HybridGP codeunits and tables are allowed to omit the tooltip — those types are not surfaced to users.

Best Practice

Every field control on a regular page carries ToolTip = 'Specifies …'; (or a clear alternative phrasing). Compose the text in the form "what this value shows" rather than "what the user does with it".

See sample: tooltip-required-on-page-fields.good.al.

Anti Pattern

A field control with no ToolTip property at all, or ToolTip = '';. AA0218 flags both; the hover state is blank and the screen reader has nothing to announce.

See sample: tooltip-required-on-page-fields.bad.al.