{"record":{"id":"aa3491f5c1f4c4b4","repo":"flowable/flowable-engine","slug":"planiteminstanceid-is-null-aa3491","errorCode":null,"errorMessage":"planItemInstanceId is null","messagePattern":"planItemInstanceId is null","errorType":"validation","errorClass":"FlowableIllegalArgumentException","httpStatus":null,"severity":"warning","filePath":"modules/flowable-cmmn-engine/src/main/java/org/flowable/cmmn/engine/impl/cmd/RemoveLocalVariablesCmd.java","lineNumber":40,"sourceCode":"import org.flowable.common.engine.impl.interceptor.CommandContext;\n\n/**\n * @author Tijs Rademakers\n */\npublic class RemoveLocalVariablesCmd implements Command<Void> {\n    \n    protected String planItemInstanceId;\n    protected Collection<String> variableNames;\n    \n    public RemoveLocalVariablesCmd(String planItemInstanceId, Collection<String> variableNames) {\n        this.planItemInstanceId = planItemInstanceId;\n        this.variableNames = variableNames;\n    }\n    \n    @Override\n    public Void execute(CommandContext commandContext) {\n        if (planItemInstanceId == null) {\n            throw new FlowableIllegalArgumentException(\"planItemInstanceId is null\");\n        }\n        if (variableNames == null) {\n            throw new FlowableIllegalArgumentException(\"variableNames is null\");\n        }\n     \n        PlanItemInstanceEntity planItemInstanceEntity = CommandContextUtil.getPlanItemInstanceEntityManager(commandContext).findById(planItemInstanceId);\n        if (planItemInstanceEntity == null) {\n            throw new FlowableObjectNotFoundException(\"No plan item instance found for id \" + planItemInstanceId, PlanItemInstanceEntity.class);\n        }\n        planItemInstanceEntity.removeVariables(variableNames);\n        \n        return null;\n    }\n\n}\n","sourceCodeStart":22,"sourceCodeEnd":56,"githubUrl":"https://github.com/flowable/flowable-engine/blob/d6d39ce1c69ff244f2d9dc6af756a9b95e865586/modules/flowable-cmmn-engine/src/main/java/org/flowable/cmmn/engine/impl/cmd/RemoveLocalVariablesCmd.java#L22-L56","documentation":"Thrown as FlowableIllegalArgumentException by RemoveLocalVariablesCmd when the planItemInstanceId is null. This bulk variant removes several local variables from one plan item instance and validates arguments before any lookup.","triggerScenarios":"Calling CmmnRuntimeService.removeLocalVariables(null, variableNames) with a null plan item instance id.","commonSituations":"Same as the single-variable variant: uninitialized id field, lookup returning null, wrong overload invoked.","solutions":["Obtain a valid plan item instance id from planItemInstanceQuery before the bulk removal","Guard the call site against null ids","Fix the upstream producer of the id"],"exampleFix":"// before\nruntimeService.removeLocalVariables(planItemInstanceId, names); // id null\n// after\nif (planItemInstanceId != null && names != null) {\n    runtimeService.removeLocalVariables(planItemInstanceId, names);\n}","handlingStrategy":"type-guard","validationCode":null,"typeGuard":"boolean canRemove = planItemInstanceId != null && variableNames != null;","tryCatchPattern":"try { runtimeService.removeLocalVariables(planItemInstanceId, variableNames); }\ncatch (FlowableIllegalArgumentException e) { /* null argument */ }","preventionTips":["Validate id and collection at call sites","Obtain ids from planItemInstanceQuery","Centralize variable-removal helpers with null guards"],"tags":["null","variable","plan-item","argument"],"backgroundTag":"missing-required-argument","analyzedSha":"d6d39ce1c69ff244f2d9dc6af756a9b95e865586","analyzedAt":"2026-09-11T06:41:19.413Z","contentChangedAt":"2026-09-11T06:41:19.413Z","schemaVersion":2},"datasetVersion":"2026-09-18T11:17:12.947Z"}