# Issue in "Execute Workflow" node **URL:** \ **Category:** Questions\ **Created:** [March 8, 2020, 9:32pm UTC](https://community.n8n.io/t/issue-in-execute-workflow-node/969 "2020-03-08T21:32:29Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![mooghermez](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/mooghermez/32/26_2.png) [@mooghermez](https://community.n8n.io/u/mooghermez)\ **Post date:** [March 8, 2020, 9:32pm UTC](https://community.n8n.io/t/issue-in-execute-workflow-node/969/1 "2020-03-08T21:32:29Z")
Hi dear friends I try to use “Execute workflow” node to use one of my workflow in another. I think I should use “database source” to see other workflows but unfortunately I see below issue in “workflow” item: - There was a problem loading the parameter options from server: “401 - “Authorization is required!”” Could anyone please help me? Best regards; ---
**Author:** ![jan](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/jan/32/9_2.png) [@jan](https://community.n8n.io/u/jan)\ **Post date:** [March 8, 2020, 9:45pm UTC](https://community.n8n.io/t/issue-in-execute-workflow-node/969/2 "2020-03-08T21:45:06Z")
That has probably to do with the security-fix. I will remove the workflow selection and then require that people type in the workflow-id manually. In the meantime, you can do the same by simply setting the parameter to an expression and then set the workflow-id as such. It will still display you the error message but it will work anyway. ---
**Author:** ![mooghermez](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/mooghermez/32/26_2.png) [@mooghermez](https://community.n8n.io/u/mooghermez)\ **Post date:** [March 13, 2020, 11:20am UTC](https://community.n8n.io/t/issue-in-execute-workflow-node/969/3 "2020-03-13T11:20:54Z")
I’m so sorry I can’t fix it by my own can you please give an example or Do you have some time to fix security please? ---
**Author:** ![jan](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/jan/32/9_2.png) [@jan](https://community.n8n.io/u/jan)\ **Post date:** [March 13, 2020, 11:27am UTC](https://community.n8n.io/t/issue-in-execute-workflow-node/969/4 "2020-03-13T11:27:31Z")
Sorry do not understand. I already wrote exactly what has to be done. But can write it down again step by step if it helps: 1. Left click on the cogs icon on the very right side of the field “Workflow ID:” 2. In the appearing menu select “Add Expression” 3. You will then see the Expression-Editor 4. In it use as expression simply the workflow-ID. So if it is `12` you write in the field simply `12` not more and not less That is it. It then probably still displays the message that it can not load the data but it should execute just fine. ---
**Author:** ![mooghermez](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/mooghermez/32/26_2.png) [@mooghermez](https://community.n8n.io/u/mooghermez)\ **Post date:** [June 23, 2020, 6:33am UTC](https://community.n8n.io/t/issue-in-execute-workflow-node/969/5 "2020-06-23T06:33:33Z")
Can anyone please explain me why when my workflow run a “Execute Workflow” node it run that workflow but show below error? ```` ERROR: Cannot read property 'data' of undefined ``` TypeError: Cannot read property 'data' of undefined at Object.executeWorkflow (/usr/local/lib/node_modules/n8n/dist/src/WorkflowExecuteAdditionalData.js:225:27) at async Object.execute (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/ExecuteWorkflow.node.js:161:30) at async /usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/src/WorkflowExecute.js:370:47 ``` ```` ---
**Author:** ![huuich](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/huuich/32/1115_2.png) [@huuich](https://community.n8n.io/u/huuich)\ **Post date:** [June 23, 2020, 6:53am UTC](https://community.n8n.io/t/issue-in-execute-workflow-node/969/6 "2020-06-23T06:53:00Z")
Can you share your workflow to test? (by select all node, copy and paste to post) ---
**Author:** ![mooghermez](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/mooghermez/32/26_2.png) [@mooghermez](https://community.n8n.io/u/mooghermez)\ **Post date:** [June 23, 2020, 7:02am UTC](https://community.n8n.io/t/issue-in-execute-workflow-node/969/7 "2020-06-23T07:02:30Z")
In fact it happen on any workflow like this: ``` { "name": "", "nodes": [ { "parameters": {}, "name": "Start", "type": "n8n-nodes-base.start", "typeVersion": 1, "position": [ 250, 300 ] }, { "parameters": { "workflowId": "27" }, "name": "Execute Workflow", "type": "n8n-nodes-base.executeWorkflow", "typeVersion": 1, "position": [ 450, 300 ] } ], "connections": { "Start": { "main": [ [ { "node": "Execute Workflow", "type": "main", "index": 0 } ] ] } }, "active": false, "settings": {} } ``` in this workflow I get below error: ```` ERROR: Cannot read property 'toString' of undefined ``` TypeError: Cannot read property 'toString' of undefined at Object.contains (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/If.node.js:223:50) at Object.execute (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/If.node.js:259:94) at Workflow.runNode (/usr/local/lib/node_modules/n8n/node_modules/n8n-workflow/dist/src/Workflow.js:570:37) at /usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/src/WorkflowExecute.js:370:62 ``` ```` ---
**Author:** ![huuich](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/huuich/32/1115_2.png) [@huuich](https://community.n8n.io/u/huuich)\ **Post date:** [June 23, 2020, 7:16am UTC](https://community.n8n.io/t/issue-in-execute-workflow-node/969/8 "2020-06-23T07:16:11Z")
I’ve tried and put Workflow ID but has this error: ![image](https://europe1.discourse-cdn.com/n8n/original/2X/b/b30e46603cf191cd4274dae19c51f4c04d797210.png) ---
**Author:** ![jan](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/jan/32/9_2.png) [@jan](https://community.n8n.io/u/jan)\ **Post date:** [June 23, 2020, 8:53am UTC](https://community.n8n.io/t/issue-in-execute-workflow-node/969/9 "2020-06-23T08:53:30Z")
@mooghermez That means that something tries to access the property `data` on something which does not exist or that you call `toString` on something that does not exist. The following should for example return the same error: ```auto const a = {}; a.b.data; a.b.toString(); ``` In this case does `a` not have the property `b` which means that b is `undefined`. If you then try to access `data` on it or call `.toString()` you will see an error message like you do. In your case it seems to happen in the IF-Node which makes me believe that one of the values you reference in there returns `undefined`. So please check them. ---
**Author:** ![Chris-Hayes](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/chris-hayes/32/2490_2.png) [@Chris-Hayes](https://community.n8n.io/u/Chris-Hayes)\ **Post date:** [November 22, 2020, 10:38am UTC](https://community.n8n.io/t/issue-in-execute-workflow-node/969/10 "2020-11-22T10:38:02Z")
I came across this thread because I had the same error below. ```auto ERROR: Cannot read property 'data' of undefined ``` If it helps anyone else, I got this on a Jira trigger because I put the wrong domain into the Jira server credentials. So, untested credentials are something to check.