ApplicationCop

The ApplicationCop enforces Business Central application conventions and design standards. It validates how tables, pages, enums, labels, permissions, and metadata should be modeled. Violating these rules won’t break your code at the platform level, but leads to inconsistent user experience, non-standard extensions, or objects that don’t integrate well with the broader Business Central application framework

Rules

IDTitleSeverityEnabledCodeFix
AC0001DrillDownPageId and LookupPageId must be defined for tables used in list pagesInfo✓
AC0002Single-field primary key requires the NotBlank propertyWarning✓✓
AC0003Set NotBlank property to false when No. Series TableRelation existsWarning✓✓
AC0004Confirm() must be implemented through the Confirm Management codeunitInfo✓✓
AC0005GlobalLanguage() must be implemented through the Translation Helper codeunitInfo✓✓
AC0006Use the Page Management codeunit instead of invoking Page.Run directlyWarning✓✓
AC0007Install and Upgrade codeunits should have Access set to InternalWarning✓✓
AC0008DataPerCompany must be explicitly set on table objectsInfo—
AC0009The Caption of permissionset objects should not exceed the maximum lengthWarning✓✓
AC0010All application objects must be covered by a PermissionSetWarning✓
AC0011Captions must be defined on user-facing objects and controlsInfo✓
AC0012Integration events must not be declared in codeunits with Access set to InternalWarning✓✓
AC0013DropDown and Brick fieldgroups must be definedInfo—
AC0014ToolTip must end with a dotInfo✓
AC0015ToolTip should start with SpecifiesInfo✓
AC0016Do not use line breaks in ToolTipInfo✓
AC0017ToolTip should not exceed 200 charactersInfo✓
AC0018Empty captions should be lockedWarning✓✓
AC0019Reserve Enum value zero (0) for empty valueInfo✓
AC0020Labels suffixed with Tok must be lockedWarning✓✓
AC0021Locked Label must have a suffix TokInfo—
AC0022Empty Enum value should not have a Caption property specifiedWarning✓
AC0023Enum value must have non-empty Caption to be selectable in the clientWarning✓
AC0024Event publisher methods should not be publicWarning✓✓
AC0025Use the (CR)LFSeparator from the Type Helper codeunitInfo✓
AC0026Explicitly set AllowInCustomizations for excluded fieldsInfo✓
AC0027Use the Tok suffix for token labelsInfo✓
AC0028Table field must define a ToolTipInfo✓
AC0029Duplicate ToolTip between page and table fieldInfo✓
AC0030Use return value for better error handlingInfo✓
AC0031Informs the user that there are missing permission to access tabledataInfo✓

Note: Rules marked with “—” in the Enabled column are disabled by default and must be explicitly enabled in your project’s .editorconfig or ruleset file.