flowable/flowable-engine · error · FlowableIllegalArgumentException

Invalid query usage: cannot set both taskNameIn and…

Error message

Invalid query usage: cannot set both taskNameIn and taskNameLikeIgnoreCase

What it means

Query usage conflict in HistoricTaskInstanceQuery.taskNameIn: the taskNameLikeIgnoreCase criterion is already set on the same query, and combining it with an IN-list of names would be ambiguous, so the call is rejected.

Solutions

1. Use only one task-name filter per query
2. Reset or rebuild the query instead of stacking name filters
3. Combine alternatives with or() if an inclusive match is intended

When it happens

Trigger: Thrown at modules/flowable-task-service/src/main/java/org/flowable/task/service/impl/HistoricTaskInstanceQueryImpl.java:752 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of flowable/flowable-engine@d6d39ce1c6 (2026-09-11). Data as JSON: /api/errors/060a2cb3dd99c0a4. Report an issue: GitHub.

Appendix: source

Thrown at modules/flowable-task-service/src/main/java/org/flowable/task/service/impl/HistoricTaskInstanceQueryImpl.java:752

    }

    @Override
    public HistoricTaskInstanceQuery taskNameIn(Collection<String> taskNameList) {
        if (taskNameList == null) {
            throw new FlowableIllegalArgumentException("Task name list is null");
        }
        if (taskNameList.isEmpty()) {
            throw new FlowableIllegalArgumentException("Task name list is empty");
        }

        if (taskName != null) {
            throw new FlowableIllegalArgumentException("Invalid query usage: cannot set both taskNameIn and taskName");
        }
        if (taskNameLike != null) {
            throw new FlowableIllegalArgumentException("Invalid query usage: cannot set both taskNameIn and taskNameLike");
        }
        if (taskNameLikeIgnoreCase != null) {
            throw new FlowableIllegalArgumentException("Invalid query usage: cannot set both taskNameIn and taskNameLikeIgnoreCase");
        }

        if (inOrStatement) {
            currentOrQueryObject.taskNameList = taskNameList;
        } else {
            this.taskNameList = taskNameList;
        }
        return this;
    }

    @Override
    public HistoricTaskInstanceQuery taskNameInIgnoreCase(Collection<String> taskNameList) {
        if (taskNameList == null) {
            throw new FlowableIllegalArgumentException("Task name list is null");
        }
        if (taskNameList.isEmpty()) {
            throw new FlowableIllegalArgumentException("Task name list is empty");
        }

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