PlatformCop

The PlatformCop detects code that is technically broken, dangerous, or silently ignored at the AL platform level. It flags constructs where the runtime behaves differently from what the developer likely intended. Unlike the ApplicationCop, which focuses on Business Central application conventions, PlatformCop targets AL platform and runtime correctness regardless of the application context.

Rules

ID	Title	Severity	Enabled	Code Fix
PC0001	FlowFields should not be editable	Warning	✓	✓
PC0002	AutoIncrement fields are not supported in temporary tables	Error	✓
PC0003	Filter operators should not be used in SetRange	Error	✓	✓
PC0004	List objects are one-based	Error	✓
PC0005	Explicitly set Extensible property on public objects	Hidden		✓
PC0006	Every object needs to specify a value for the Access property	Hidden
PC0007	AutoCalcFields should only be used for FlowFields or Blob fields	Error	✓
PC0008	Avoid unsupported operators with placeholders in SetFilter expressions	Error	✓	✓
PC0010	Event subscriber var keyword mismatch	Warning	✓	✓
PC0011	Handled parameters in event signatures should be passed by var	Warning	✓	✓
PC0012	Set values for FlowFilter fields using filtering methods	Warning	✓
PC0013	Record.Get procedure arguments	Error	✓
PC0014	Use two single quotes instead of double quotes in JPath expressions	Warning	✓	✓
PC0015	Guid empty string comparison	Error	✓	✓
PC0016	Clear/ClearAll does not reset SingleInstance codeunit state	Warning	✓
PC0017	Page record argument does not match source table	Warning	✓
PC0018	Page record methods require a SourceTable	Error	✓
PC0019	Invalid single-quote escaping in filter string	Warning	✓	✓
PC0020	Incompatible field types across TransferFields	Warning	✓
PC0021	Inconsistent field names across TransferFields	Warning	✓
PC0022	Possible overflow assigning	Warning	✓	✓
PC0023	IsHandled parameter assignment	Warning	✓
PC0024	ApplicationArea property is not applicable to API pages	Info	✓	✓
PC0025	ODataKeyFields should use SystemId	Error	✓
PC0026	Mandatory field missing on API page	Warning	✓	✓
PC0027	Avoid triggering table logic on temporary records	Warning	✓
PC0028	Table relation field length mismatch	Warning	✓
PC0029	Use CreateSequentialGuid for key fields	Info	✓	✓
PC0030	Use partial records on read operation	Info	✓	✓
PC0031	Partial records cause JIT load on full-field operations	Warning	✓	✓
PC0032	Report layout property exceeds maximum length	Error	✓
PC0033	Duplicate OData EntityName on page controls	Warning	✓
PC0034	Placeholder argument count mismatch	Warning	✓
PC0035	Use SetAutoCalcFields for loops	Warning	✓	✓
PC0036	SetRecord() does not support temporary records	Warning	✓
PC0037	Use Validate() instead of direct field assignment	Warning	✓	✓