Here is a working flow. Look at the settings I used and how it flows.
Demo flow (use CTRL+I to import)
[
{
"id": "89f0d8bb4916ea84",
"type": "ui_toast",
"z": "7c13b8452619581b",
"position": "top right",
"displayTime": "3",
"highlight": "red",
"sendall": true,
"outputs": 0,
"ok": "OK",
"cancel": "",
"raw": false,
"className": "",
"topic": "Error",
"name": "",
"x": 1120,
"y": 480,
"wires": []
},
{
"id": "ca1b95d22899ed5f",
"type": "change",
"z": "7c13b8452619581b",
"name": "",
"rules": [
{
"t": "set",
"p": "payload",
"pt": "msg",
"to": "Classification is empty",
"tot": "str"
}
],
"action": "",
"property": "",
"from": "",
"to": "",
"reg": false,
"x": 912,
"y": 480,
"wires": [
[
"89f0d8bb4916ea84"
]
]
},
{
"id": "ee4477c3a660cfb6",
"type": "change",
"z": "7c13b8452619581b",
"name": "",
"rules": [
{
"t": "set",
"p": "payload",
"pt": "msg",
"to": "User Input is empty",
"tot": "str"
}
],
"action": "",
"property": "",
"from": "",
"to": "",
"reg": false,
"x": 912,
"y": 560,
"wires": [
[
"89f0d8bb4916ea84"
]
]
},
{
"id": "62d7e078e0fdd545",
"type": "change",
"z": "7c13b8452619581b",
"name": "",
"rules": [
{
"t": "set",
"p": "payload",
"pt": "msg",
"to": "Tip is empty",
"tot": "str"
}
],
"action": "",
"property": "",
"from": "",
"to": "",
"reg": false,
"x": 916,
"y": 640,
"wires": [
[
"89f0d8bb4916ea84"
]
]
},
{
"id": "0ded7664e38d4c45",
"type": "switch",
"z": "7c13b8452619581b",
"name": "UserInputCl empty \\n UserInputCl OK",
"property": "UserInputCl",
"propertyType": "msg",
"rules": [
{
"t": "null"
},
{
"t": "else"
}
],
"checkall": "true",
"repair": false,
"outputs": 2,
"x": 694,
"y": 496,
"wires": [
[
"ca1b95d22899ed5f"
],
[
"9ec0bad87e7e3ed6"
]
]
},
{
"id": "9ec0bad87e7e3ed6",
"type": "switch",
"z": "7c13b8452619581b",
"name": "TextInput empty \\n TextInput OK",
"property": "TextInput",
"propertyType": "msg",
"rules": [
{
"t": "null"
},
{
"t": "else"
}
],
"checkall": "true",
"repair": false,
"outputs": 2,
"x": 684,
"y": 576,
"wires": [
[
"ee4477c3a660cfb6"
],
[
"29dd2bc068cbb1f8"
]
]
},
{
"id": "29dd2bc068cbb1f8",
"type": "switch",
"z": "7c13b8452619581b",
"name": "UserInputTip empty \\n UserInputTip OK",
"property": "UserInputTip",
"propertyType": "msg",
"rules": [
{
"t": "null"
},
{
"t": "else"
}
],
"checkall": "true",
"repair": false,
"outputs": 2,
"x": 698,
"y": 656,
"wires": [
[
"62d7e078e0fdd545"
],
[
"441e35421e46de9c"
]
]
},
{
"id": "bf23e13acd4755f5",
"type": "change",
"z": "7c13b8452619581b",
"name": "",
"rules": [
{
"t": "set",
"p": "UserInputTip",
"pt": "msg",
"to": "UserInputTip",
"tot": "flow"
},
{
"t": "set",
"p": "TextInput",
"pt": "msg",
"to": "TextInput",
"tot": "flow"
},
{
"t": "set",
"p": "UserInputCl",
"pt": "msg",
"to": "UserInputCl",
"tot": "flow"
}
],
"action": "",
"property": "",
"from": "",
"to": "",
"reg": false,
"x": 468,
"y": 496,
"wires": [
[
"0ded7664e38d4c45",
"cd1d0d31ac6446e8"
]
]
},
{
"id": "441e35421e46de9c",
"type": "debug",
"z": "7c13b8452619581b",
"name": "-->> To MSSQL PLUS -->>",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": true,
"complete": "true",
"targetType": "full",
"statusVal": "UserInputTip & \"/\" & UserInputCl & \"/\" & TextInput",
"statusType": "jsonata",
"x": 768,
"y": 736,
"wires": []
},
{
"id": "bce72d0f261b67cb",
"type": "ui_button",
"z": "7c13b8452619581b",
"name": "",
"group": "2733e4a59af46689",
"order": 4,
"width": 0,
"height": 0,
"passthru": false,
"label": "Carica",
"tooltip": "",
"color": "",
"bgcolor": "",
"className": "",
"icon": "",
"payload": "",
"payloadType": "str",
"topic": "topic",
"topicType": "msg",
"x": 318,
"y": 496,
"wires": [
[
"bf23e13acd4755f5"
]
]
},
{
"id": "cd1d0d31ac6446e8",
"type": "debug",
"z": "7c13b8452619581b",
"name": "",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "true",
"targetType": "full",
"statusVal": "",
"statusType": "auto",
"x": 438,
"y": 576,
"wires": []
},
{
"id": "2733e4a59af46689",
"type": "ui_group",
"name": "Inserimento Nuovo Strumento",
"tab": "fa803f07a50afa29",
"order": 1,
"disp": true,
"width": "9",
"collapse": false,
"className": ""
},
{
"id": "fa803f07a50afa29",
"type": "ui_tab",
"name": "Inserimento Attrezzature-Strumentazione",
"icon": "dns",
"order": 2,
"disabled": false,
"hidden": false
}
]
NB...
Judging by many of the simple mistakes you made, I definitely recommend you spend some time learning. It will save you (and me) lots of time if you understand what is going on.
Please take a time out to watch the very useful node-red videos