bcquality/microsoft/knowledge/style/optioncaption-required-and-matches-membercount.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

1.7 KiB

bc-version domain keywords technologies countries application-area
all
style
optioncaption
option
member-count
aa0221
aa0223
aa0224
al
w1
all

Option fields need OptionCaption, and its element count must match OptionMembers (CodeCop AA0221/AA0223/AA0224)

Description

CodeCop AA0221 requires an OptionCaption on every option-type field that is not sourced from a table column (table-sourced option fields inherit the captions of the underlying field). AA0223 and AA0224 add two integrity checks: the number of comma-separated entries in OptionCaption must equal the number of entries in OptionMembers, and each caption must align by position with its member. The position alignment is what the platform uses to translate option values — the OptionMembers list never changes per locale, the OptionCaption list does. A mismatch in count or order produces silent corruption: the option Released shows the caption that belongs to Pending, and the bug is locale-dependent.

Best Practice

OptionMembers = Open,Released,Pending; and OptionCaption = 'Open,Released,Pending'; — same count, same order. When adding a new member, update both lines in the same commit.

See sample: optioncaption-required-and-matches-membercount.good.al.

Anti Pattern

OptionMembers = Open,Released,Pending; with no OptionCaption at all (the user sees the raw English members and translation is impossible), or OptionMembers = Low,Medium,High,Critical; paired with OptionCaption = 'Low,Medium,High'; — count mismatch, Critical displays as blank or carries the wrong caption depending on platform version.

See sample: optioncaption-required-and-matches-membercount.bad.al.