flowable/flowable-engine · error · FlowableIllegalArgumentException

No resource id provided

Error message

No resource id provided

What it means

BaseDecisionResource.getDeploymentResourceData throws FlowableIllegalArgumentException when the resourceId path variable is null. The DMN REST layer requires both a deployment id and a resource id to fetch a deployment resource's bytes, and it validates them up front before any query is executed. This is a caller-side bug: the request was dispatched without the required path segment.

Solutions

1. Include the actual resource id in the request URL: first GET /dmn-repository/deployments/{deploymentId}/resources to list resource ids, then request one of them.
2. Verify the resource is not being consumed with a variable that is null/empty in your client code before building the URL.
3. Check your REST controller mapping/wiring to confirm the {resourceId} path variable is bound and forwarded to getDeploymentResourceData.

Example fix

// before
String url = base + "/dmn-repository/deployments/" + deploymentId + "/resources/" + resourceId; // resourceId is null
// after
if (resourceId == null || resourceId.isEmpty()) {
    resourceId = listResourceIds(deploymentId).get(0); // fetch a valid id first
}
String url = base + "/dmn-repository/deployments/" + deploymentId + "/resources/" + resourceId;

if (resourceId == null || resourceId.isEmpty()) throw new IllegalArgumentException("resourceId is required");
// then call the endpoint

When it happens

Trigger: GET on a DMN deployment-resource endpoint where the {resourceId} path variable resolves to null, i.e. the URL was built without the resource id segment (e.g. /dmn-repository/deployments/{deploymentId}/resources/ with a trailing slash) or a routing/mapping misconfiguration dropped the variable.

Common situations: Hand-constructed URLs in scripts or clients that omit the resource id; template strings with an empty interpolated variable; a proxy or gateway stripping the trailing path segment; copying an example URL and deleting the id by accident.

Understand the failure class

Background: "missing required argument" and "the following required arguments were not provided": what required-argument errors mean and how to fix them — this error's family across 20 libraries.

Related errors

• No deployment id provided
• No resource name provided
• A group or a user is required to create an identity link.
• A group or a user is required to create an identity link.
• A group or a user is required to create an identity link.

AI-assisted analysis of flowable/flowable-engine@d6d39ce1c6 (2026-09-11). Data as JSON: /api/errors/db15f5798d7c1a9f. Report an issue: GitHub.

Appendix: source

Thrown at modules/flowable-dmn-rest/src/main/java/org/flowable/dmn/rest/service/api/repository/BaseDecisionResource.java:75

        if (decision == null) {
            throw new FlowableObjectNotFoundException("Could not find a decision with id '" + decisionId + "'.");
        }
        
        if (restApiInterceptor != null) {
            restApiInterceptor.accessDecisionTableInfoById(decision);
        }
        
        return decision;
    }

    protected byte[] getDeploymentResourceData(String deploymentId, String resourceId, HttpServletResponse response) {

        if (deploymentId == null) {
            throw new FlowableIllegalArgumentException("No deployment id provided");
        }
        if (resourceId == null) {
            throw new FlowableIllegalArgumentException("No resource id provided");
        }

        // Check if deployment exists
        DmnDeploymentQuery deploymentQuery = dmnRepositoryService.createDeploymentQuery().deploymentId(deploymentId);
        
        DmnDeployment deployment = deploymentQuery.singleResult();
        if (deployment == null) {
            throw new FlowableObjectNotFoundException("Could not find a deployment with id '" + deploymentId);
        }
        
        if (restApiInterceptor != null) {
            restApiInterceptor.accessDeploymentById(deployment);
        }

        List<String> resourceList = dmnRepositoryService.getDeploymentResourceNames(deploymentId);

        if (resourceList.contains(resourceId)) {
            String contentType = contentTypeResolver.resolveContentType(resourceId);

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