Unable to execute Flow. The logs report this error: Could not retrieve snapshot for testDescriptionWhen you execute a Flow (either via Test or by triggering it) it doesn't execute. If you check the Node logs an error is recorded: Could not retrieve snapshot for testCauseFlow Designer ran into difficulties executing the Flow and you need to use the Node logs to work out what's wrong exactly. ResolutionSet the Flow Designer logs to Debug via the Flow Properties (specify log level field)Repeat the test and look for the same error (Could not retrieve snapshot for test). This is the endLook for the start: DEBUG: Flow Designer: Compiling flow <flow name>Remove everything elseTo make it more readable, you need to remove any references you don't need. References to Business Rules, activity on different threads, different users etc.What you should end up with is a around 30 lines of log lines which should explain what is happening. Read through it referencing the Flow in Flow Designer For example, consider this log stack: DEBUG: Flow Designer: Compiling flow TestFlow | Change DEBUG: Flow Designer: Step Get Catalog Variables Step Created with an input count of 3 and an output count of 0DEBUG: Flow Designer: Step Get Catalog Variables Step Created with an input count of 3 and an output count of 5DEBUG: Flow Designer: Action created with an input count of 3 an output count of 5 DEBUG: Flow Designer: Step Lookup Record step Created with an input count of 5 and an output count of 2DEBUG: Flow Designer: Step Lookup Record step Created with an input count of 5 and an output count of 2DEBUG: Flow Designer: Action created with an input count of 5 an output count of 2 DEBUG: Flow Designer: Step Create Task step Created with an input count of 4 and an output count of 2DEBUG: Flow Designer: Action created with an input count of 3 an output count of 2 DEBUG: Input param1 assigned with a reference count of 1DEBUG: Input param2 assigned with a reference count of 1 SEVERE *** ERROR *** Flow Designer: nullSEVERE *** ERROR *** Flow Designer: Could not retrieve snapshot for testcom.glide.flow_trigger.engine.FlowSnapshotPlanRetriever.retrieve(FlowSnapshotPlanRetriever.java:33)com.snc.process_flow.engine.serialization.PlanProxy.plan(PlanProxy.java:43) What it's doing here is going through the various actions of the Flow and trying to compile everything. You can check that in the Flow and you'd see something like: 1) Get Catalog Variables: OK2) Lookup Record: OK3) Create Task: OK So up to this point everything works okay. It's likely it fails on the next step in the Flow execution. The 'null' in the error is likely a missing input value. The logs say this: DEBUG: Input param1 assigned with a reference count of 1DEBUG: Input param2 assigned with a reference count of 1 They are inputs for the next step. The first two (param1 and param2) work okay but the third one fails.