Lookup Function in Dataweave

• Lookup function is used to call another flow within a dataweave similar to flow reference
• It is used to call flow and private flow but not sub-flow.
• It passes payload only.
• Lookup function has three parameter as below:

1. flowName: define the target flow name.
2. payload:? define payload that sends to target flow.
3. timeoutMillis: It is an optional parameter. It defines timeout for the execution of target flow and default timeout is 2000 milliseconds.

Success Response:?

?Step 1: ?Here we define the main flow with set payload which has payload ‘ Muleys’.

Step 2:? Define lookup function in? ‘Calling TargetFlow’ as below:

Step 3: ?Create a targetFlow where we concate upcoming payload (Muleys) with ‘Hello’ payload.

Step 4: After execution, we get success response as? below:

Error Response:

Step 1: For error, here we added wait for 2 seconds to stop execution of flow(targetFlow) as default timeout is 2 seconds.

Step 2: After execution,getting timeout as below:

Step 3:? To increase the execution time of targetFlow, here we define timeout to 3 seconds using the third parameter of the lookup function and get a successful response.