# Error in payload
**URL:** https://discourse.nodered.org/t/error-in-payload/65715
**Category:** General
**Created:** [27 July 2022 17:53 UTC](https://discourse.nodered.org/t/error-in-payload/65715 "2022-07-27T17:53:20Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@sn19](https://discourse.nodered.org/u/sn19)
#### Post date: [27 July 2022 17:53 UTC](https://discourse.nodered.org/t/error-in-payload/65715/1 "2022-07-27T17:53:21Z")
What causes the following error and how do I fix it ?
msg : error
"TypeError: Cannot read properties of undefined (reading 'split')"
---
### Author:  [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [27 July 2022 18:31 UTC](https://discourse.nodered.org/t/error-in-payload/65715/2 "2022-07-27T18:31:06Z")
An undefined property that a script is trying to read another property from, often hard to pin point with no info.
---
### Author:  [@sn19](https://discourse.nodered.org/u/sn19)
#### Post date: [27 July 2022 18:56 UTC](https://discourse.nodered.org/t/error-in-payload/65715/3 "2022-07-27T18:56:14Z")
What info would you like to know? I am using .json format as input
{
```
"name" : "Integer001",
"value" :"1444535466",
"type" : "int32"
},
```
and more objects here
---
### Author:  [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [27 July 2022 19:11 UTC](https://discourse.nodered.org/t/error-in-payload/65715/4 "2022-07-27T19:11:24Z")
What you are attempting to do?
What nodes are you using?
What are your inputs?
What output you expect?
Maybe a flow json.
what operating system?
What node is producing the error?
Any code you may be using.
Maybe then someone might pin point what's causing your error.
---
### Author:  [@sn19](https://discourse.nodered.org/u/sn19)
#### Post date: [27 July 2022 19:32 UTC](https://discourse.nodered.org/t/error-in-payload/65715/5 "2022-07-27T19:32:22Z")
I am attempting to establish an MQTT communication with Sparkplug B specification
The nodes I am using are inject, function, Sparkplug plus publisher, subscriber and debug (payload) node.
The input is a .json code sent via the function block
```auto
msg.payload = {
"timestamp" : 1504739061501,
"metrics" : [
{
"name" : "Integer001",
"value" :"1444535466",
"type" : "int32"
},
{
"name" : "String001",
"value" : "hello",
"type" : "string"
},
{
"name" : "Boolean001",
"value" : "true",
"type" : "boolean"
},
{
"name" : "Float001",
"value" :"192.192",
"type" : "float"
}
]
};
return msg;
```
I expect output to be structured objects
OS is Windows 10 Pro
Debug node is producing the error
* * *
_{Admin edit: wrap code in a ````` codeblock}_
---
### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [27 July 2022 19:51 UTC](https://discourse.nodered.org/t/error-in-payload/65715/6 "2022-07-27T19:51:03Z")
> [@sn19](#):
>
> The input is a .json code sent via the function block
>
> ```auto
> msg.payload = {
> "timestamp" : 1504739061501,
> "metrics" : [
> {
> "name" : "Integer001",
> "value" :"1444535466",
> "type" : "int32"
> },
> {
> "name" : "String001",
> "value" : "hello",
> "type" : "string"
> },
> {
> "name" : "Boolean001",
> "value" : "true",
> "type" : "boolean"
> },
> {
> "name" : "Float001",
> "value" :"192.192",
> "type" : "float"
> }
> ]
> };
> return msg;
>
> ```
it is perfectly valid...
> [@sn19](#):
>
> I expect output to be structured objects
And it is...
> [@sn19](#):
>
> Debug node is producing the error
If the msg is reaching a debug node, then it is not likely an error in the function - rather something else!
You are going to have to share more info (i.e. export a flow or at minimum a screenshot)
---
### Author:  [@sn19](https://discourse.nodered.org/u/sn19)
#### Post date: [27 July 2022 19:53 UTC](https://discourse.nodered.org/t/error-in-payload/65715/7 "2022-07-27T19:53:36Z")
Thank you @Steve-Mcl its working now without any errors. I figured out a fix for it and while the .json format was fine by itself , msg.payload could only be used with as a function block. when I try to use the same .json code in the inject node as a .json input itr gives me error unless I remove the msg.paylaod line and return.msg line.
---
### Author:  [@sn19](https://discourse.nodered.org/u/sn19)
#### Post date: [27 July 2022 19:54 UTC](https://discourse.nodered.org/t/error-in-payload/65715/8 "2022-07-27T19:54:40Z")
I am trying to come up with a code or node red flow so that I'd be able to setup SparkplugB based MQTT protocol by making use of the ignition broker.
---
### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [27 July 2022 19:58 UTC](https://discourse.nodered.org/t/error-in-payload/65715/9 "2022-07-27T19:58:30Z")
> [@sn19](#):
>
> msg.payload could only be used with as a function block
Yes, that is a very basic node-red knowledge.
In an inject you would enter `payload` since the entry is already prefixed with `msg.`
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [25 September 2022 19:58 UTC](https://discourse.nodered.org/t/error-in-payload/65715/10 "2022-09-25T19:58:40Z")
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