diff --git a/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/WorkflowService.java b/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/WorkflowService.java
index f4ade6dc8b..f4884ebc70 100644
--- a/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/WorkflowService.java
+++ b/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/WorkflowService.java
@@ -340,9 +340,9 @@ private void fillAndValidateAttributes(CreateCaseParams createCaseParams) throws
         }
         if (createCaseParams.getProcess() == null) {
             PetriNet petriNet;
-            if (createCaseParams.getProcessId() != null) {
+            if (createCaseParams.getProcessId() != null && !createCaseParams.getProcessId().isEmpty()) {
                 petriNet = new com.netgrif.application.engine.adapter.spring.petrinet.domain.PetriNet((com.netgrif.application.engine.adapter.spring.petrinet.domain.PetriNet) petriNetService.get(new ObjectId(createCaseParams.getProcessId())));
-            } else if (createCaseParams.getProcessIdentifier() != null) {
+            } else if (createCaseParams.getProcessIdentifier() != null && !createCaseParams.getProcessIdentifier().isEmpty()) {
                 PetriNet originNet = petriNetService.getDefaultVersionByIdentifier(createCaseParams.getProcessIdentifier());
                 if (originNet == null) {
                     throw new IllegalArgumentException("Could not find the process for the Case from provided inputs on case creation.");