Andrew This workflow corresponds to n8n.io template #3811 — we link there as the canonical source.
This workflow follows the Form → Form Trigger recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
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{
"nodes": [
{
"id": "63de70dc-48ba-45a8-9e6e-3ba7cc2e7cf8",
"name": "PayPal | Encode Basic Auth Token",
"type": "n8n-nodes-base.code",
"position": [
380,
-920
],
"parameters": {},
"typeVersion": 2
},
{
"id": "73faca88-4d2e-43cd-aaa4-1825bde017bb",
"name": "Remove Client ID and Secret Key",
"type": "n8n-nodes-base.set",
"position": [
740,
-1220
],
"parameters": {},
"typeVersion": 3.4
},
{
"id": "f6c75cde-4c28-4b26-8838-6434114043af",
"name": "Set Invoice Number and Date",
"type": "n8n-nodes-base.code",
"position": [
380,
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],
"parameters": {},
"typeVersion": 2
},
{
"id": "7707fd9f-b85b-40af-9693-d583764cd514",
"name": "Add href link for Preview",
"type": "n8n-nodes-base.merge",
"position": [
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-1220
],
"parameters": {},
"typeVersion": 3.1
},
{
"id": "0a0ac88b-52fc-4fa2-96ac-2d5a55af82c3",
"name": "Get Preview URL",
"type": "n8n-nodes-base.code",
"position": [
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],
"parameters": {},
"typeVersion": 2
},
{
"id": "04eca937-60f7-45d4-a452-95d1bcc4b7b3",
"name": "Reformat JSON",
"type": "n8n-nodes-base.code",
"position": [
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],
"parameters": {},
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},
{
"id": "95261691-5fe1-46d5-8f7d-5a3be90699fb",
"name": "Add Another Item",
"type": "n8n-nodes-base.form",
"position": [
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-680
],
"parameters": {},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "aa0dd700-d637-4ef2-9432-6b75309fc5fe",
"name": "Remove Add Decision",
"type": "n8n-nodes-base.code",
"position": [
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],
"parameters": {},
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},
{
"id": "8324b154-1a3b-4c69-9eaa-4e82360adcc7",
"name": "Reformat newItem JSON",
"type": "n8n-nodes-base.code",
"position": [
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],
"parameters": {},
"typeVersion": 2
},
{
"id": "c48ae217-0526-4d84-9e86-e3f4a5558fa5",
"name": "Append newItem into items with currency_code",
"type": "n8n-nodes-base.code",
"position": [
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],
"parameters": {},
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"alwaysOutputData": true
},
{
"id": "b069144e-afdd-4484-b663-4489d6aa031b",
"name": "Collect Invoice Details",
"type": "n8n-nodes-base.formTrigger",
"position": [
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],
"parameters": {},
"typeVersion": 2.2
},
{
"id": "bd62935d-22c5-4d08-b98e-d340d3ede737",
"name": "Prompt for Additional Line-Item",
"type": "n8n-nodes-base.form",
"position": [
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],
"parameters": {},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "7a8e8566-9485-41ad-8730-06e4d3bbea51",
"name": "Prompt for Additional Line-Item 1",
"type": "n8n-nodes-base.form",
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],
"parameters": {},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "e408be60-75dc-40cb-b1f2-5932ae0dc6f0",
"name": "Loop: More Items?",
"type": "n8n-nodes-base.switch",
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],
"parameters": {},
"typeVersion": 3.2,
"alwaysOutputData": false
},
{
"id": "d1c9d3f3-f2f7-4fe5-a2d8-1bc047d96e44",
"name": "Combine New Items Into Master List",
"type": "n8n-nodes-base.merge",
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],
"parameters": {},
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},
{
"id": "c90eb155-7af5-437e-999f-feaf9c309f27",
"name": "Fetch OAuth Token",
"type": "n8n-nodes-base.httpRequest",
"position": [
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],
"parameters": {},
"typeVersion": 4.2
},
{
"id": "b5c25f9a-09fc-44e9-b5db-55e83b7fdab0",
"name": "Call PayPal Create Invoice",
"type": "n8n-nodes-base.httpRequest",
"position": [
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],
"parameters": {},
"typeVersion": 4.2
},
{
"id": "cde91e5b-4587-431d-b9fd-3c8bb442f74a",
"name": "Dispatch Invoice via PayPal",
"type": "n8n-nodes-base.httpRequest",
"position": [
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],
"parameters": {},
"typeVersion": 4.2
},
{
"id": "66192979-452f-4c60-8a15-1ac2dd9f3dab",
"name": "Merge Base Invoice & Add-Item Decision",
"type": "n8n-nodes-base.merge",
"position": [
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],
"parameters": {},
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},
{
"id": "0d5fceaf-560f-4d71-ae9f-f35e575dc7bb",
"name": "Merge Updated Items & Add-Item Decision",
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],
"parameters": {},
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},
{
"id": "0d70c9d7-fc5f-4401-a40b-19b59acbd3a3",
"name": "Strip Add-Item Loop Metadata",
"type": "n8n-nodes-base.code",
"position": [
-40,
-1220
],
"parameters": {},
"typeVersion": 2
},
{
"id": "bbe3093b-b360-4555-82a8-fba84a1b726d",
"name": "Merge Invoice Creation Response & Preview Data",
"type": "n8n-nodes-base.merge",
"position": [
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],
"parameters": {},
"typeVersion": 3.1
},
{
"id": "7eb8f035-05c2-4e51-991b-2b175b902de6",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
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"parameters": {
"content": ""
},
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{
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"name": "Sticky Note",
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"parameters": {
"content": ""
},
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{
"id": "13472852-3b1a-42d2-8ece-b9592ee1982c",
"name": "Sticky Note3",
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"parameters": {
"content": ""
},
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},
{
"id": "bf8b8a33-d152-43ba-8103-bf67871320a8",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
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"parameters": {
"content": ""
},
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},
{
"id": "405f8114-34b9-4269-b552-cf62469012ae",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
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"parameters": {
"content": ""
},
"typeVersion": 1
},
{
"id": "5871edf3-6dc4-4281-a63e-8320d7811a62",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
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],
"parameters": {
"content": ""
},
"typeVersion": 1
}
],
"connections": {
"Reformat JSON": {
"main": [
[
{
"node": "Prompt for Additional Line-Item",
"type": "main",
"index": 0
},
{
"node": "Merge Base Invoice & Add-Item Decision",
"type": "main",
"index": 0
}
]
]
},
"Get Preview URL": {
"main": [
[
{
"node": "Dispatch Invoice via PayPal",
"type": "main",
"index": 0
}
]
]
},
"Add Another Item": {
"main": [
[
{
"node": "Reformat newItem JSON",
"type": "main",
"index": 0
}
]
]
},
"Fetch OAuth Token": {
"main": [
[
{
"node": "Merge Invoice Creation Response & Preview Data",
"type": "main",
"index": 1
}
]
]
},
"Loop: More Items?": {
"main": [
[
{
"node": "Strip Add-Item Loop Metadata",
"type": "main",
"index": 0
}
],
[
{
"node": "Remove Add Decision",
"type": "main",
"index": 0
}
]
]
},
"Remove Add Decision": {
"main": [
[
{
"node": "Add Another Item",
"type": "main",
"index": 0
},
{
"node": "Combine New Items Into Master List",
"type": "main",
"index": 0
}
]
]
},
"Reformat newItem JSON": {
"main": [
[
{
"node": "Combine New Items Into Master List",
"type": "main",
"index": 1
}
]
]
},
"Collect Invoice Details": {
"main": [
[
{
"node": "Reformat JSON",
"type": "main",
"index": 0
}
]
]
},
"Add href link for Preview": {
"main": [
[
{
"node": "Get Preview URL",
"type": "main",
"index": 0
}
]
]
},
"Call PayPal Create Invoice": {
"main": [
[
{
"node": "Add href link for Preview",
"type": "main",
"index": 1
}
]
]
},
"Set Invoice Number and Date": {
"main": [
[
{
"node": "Remove Client ID and Secret Key",
"type": "main",
"index": 0
}
]
]
},
"Strip Add-Item Loop Metadata": {
"main": [
[
{
"node": "Set Invoice Number and Date",
"type": "main",
"index": 0
},
{
"node": "PayPal | Encode Basic Auth Token",
"type": "main",
"index": 0
}
]
]
},
"Prompt for Additional Line-Item": {
"main": [
[
{
"node": "Merge Base Invoice & Add-Item Decision",
"type": "main",
"index": 1
}
]
]
},
"Remove Client ID and Secret Key": {
"main": [
[
{
"node": "Merge Invoice Creation Response & Preview Data",
"type": "main",
"index": 0
}
]
]
},
"PayPal | Encode Basic Auth Token": {
"main": [
[
{
"node": "Fetch OAuth Token",
"type": "main",
"index": 0
}
]
]
},
"Prompt for Additional Line-Item 1": {
"main": [
[
{
"node": "Merge Updated Items & Add-Item Decision",
"type": "main",
"index": 1
}
]
]
},
"Combine New Items Into Master List": {
"main": [
[
{
"node": "Append newItem into items with currency_code",
"type": "main",
"index": 0
}
]
]
},
"Merge Base Invoice & Add-Item Decision": {
"main": [
[
{
"node": "Loop: More Items?",
"type": "main",
"index": 0
}
]
]
},
"Merge Updated Items & Add-Item Decision": {
"main": [
[
{
"node": "Loop: More Items?",
"type": "main",
"index": 0
}
]
]
},
"Append newItem into items with currency_code": {
"main": [
[
{
"node": "Merge Updated Items & Add-Item Decision",
"type": "main",
"index": 0
},
{
"node": "Prompt for Additional Line-Item 1",
"type": "main",
"index": 0
}
]
]
},
"Merge Invoice Creation Response & Preview Data": {
"main": [
[
{
"node": "Call PayPal Create Invoice",
"type": "main",
"index": 0
},
{
"node": "Add href link for Preview",
"type": "main",
"index": 0
}
]
]
}
}
}
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About this workflow
Small businesses, consultants, agencies… anyone who bills with PayPal.
Source: https://n8n.io/workflows/3811/ — original creator credit. Request a take-down →
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