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Merge Supplier Details", "type": "n8n-nodes-base.code", "position": [ -512, 16 ], "parameters": { "jsCode": "// Requisitions from previous node\nconst requisitions = $('Read - New Requisitions').all().map(i => i.json);\n\n// Suppliers coming into this node\nconst suppliers = $input.all().map(i => i.json);\n\nconst results = [];\n\nfor (const req of requisitions) {\n\n const supplier = suppliers.find(\n s => String(s.SupplierID).trim() === String(req.SupplierID).trim()\n );\n\n results.push({\n json: {\n ...req,\n\n SupplierFound: !!supplier,\n SupplierName: supplier?.SupplierName || null,\n SupplierStatus: supplier?.Status || null,\n ContractActive: supplier?.ContractActive || null,\n ComplianceStatus: supplier?.ComplianceStatus || null,\n MaxLimit: supplier?.MaxLimit || null,\n Category: supplier?.Category || null\n }\n });\n}\n\nreturn results;" }, "typeVersion": 2 }, { "id": "add01304-49f3-4254-a010-62f18860a25e", "name": "Check - Existing Purchase Order", "type": "n8n-nodes-base.if", "position": [ -288, 16 ], "parameters": { "options": {}, "conditions": { "options": { "version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "c1", "operator": { "type": "string", "operation": "equals" }, "leftValue": "={{ $json.ApprovalStatus }}", "rightValue": "Approved" }, { "id": "7380875a-eb80-44c6-b2ad-20d3eb2599b4", "operator": { "type": "string", "operation": "equals" }, "leftValue": "={{ $json.ProcessingStatus }}", "rightValue": "New" } ] } }, "typeVersion": 2.2 }, { "id": "6d8f993f-fca2-4b8e-a8e0-3d1aa4a50d0b", "name": "End - Duplicate Request", "type": "n8n-nodes-base.noOp", "position": [ -64, 112 ], "parameters": {}, "typeVersion": 1 }, { "id": "5e2267dc-5d14-4c87-8e8a-bdf96a171f79", "name": "Code - Procurement Validation", "type": "n8n-nodes-base.code", "position": [ -64, -80 ], "parameters": { "mode": "runOnceForEachItem", "jsCode": "let validationStatus = \"PASS\";\nlet validationReason = \"Validation passed\";\n\nif (!$json.SupplierFound) {\n validationStatus = \"FAIL\";\n validationReason = \"Supplier not found\";\n}\nelse if ($json.SupplierStatus !== \"Active\") {\n validationStatus = \"FAIL\";\n validationReason = \"Supplier is not active\";\n}\nelse if ($json.ContractActive !== \"Yes\") {\n validationStatus = \"FAIL\";\n validationReason = \"Contract is not active\";\n}\nelse if ($json.ComplianceStatus !== \"Compliant\") {\n validationStatus = \"FAIL\";\n validationReason = \"Supplier compliance issue\";\n}\nelse if (Number($json.TotalAmount) > Number($json.MaxLimit)) {\n validationStatus = \"FAIL\";\n validationReason =\n `Amount exceeds supplier limit (${ $json.MaxLimit })`;\n}\n\nreturn {\n json: {\n ...$json,\n validationStatus,\n validationReason\n }\n};" }, "typeVersion": 2 }, { "id": "798e9790-4dbf-41b4-a611-7db3f615ef11", "name": "AI - Risk Assessment", "type": "n8n-nodes-base.httpRequest", "position": [ 384, -176 ], "parameters": { "url": "", "method": "POST", "options": {}, "jsonBody": "={{ JSON.stringify({model: 'llama-3.3-70b-versatile',temperature: 0.2,response_format: {type: 'json_object'},messages: [{role: 'system', content: 'You are a strict procurement compliance validator for an autonomous purchase order system. Respond ONLY with valid JSON in this exact shape: {\\\"decision\\\": \\\"APPROVED\\\" or \\\"NEEDS_REVIEW\\\" or \\\"REJECTED\\\", \\\"risk_score\\\": a number 0-100, \\\"reason\\\": a short one-sentence explanation}. No extra text.'},{role: 'user', content: 'Requisition ' + $json.ReqID + ': Item=' + $json.ItemName + ', Qty=' + $json.Quantity + ', UnitPrice=' + $json.UnitPrice + ', Total=' + $json.Currency + ' ' + $json.TotalAmount + '. Supplier=' + ($json.SupplierName || 'NOT FOUND') + ', SupplierStatus=' + $json.SupplierStatus + ', ContractActive=' + $json.ContractActive + ', MaxLimit=' + $json.MaxLimit + ', ComplianceStatus=' + $json.ComplianceStatus + '. Evaluate: is the supplier active and compliant, is the contract active, and is the total within the supplier max limit? Flag anything unusual.'}]}) }}", "sendBody": true, "specifyBody": "json", "authentication": "genericCredentialType", "genericAuthType": "httpHeaderAuth" }, "credentials": { "httpHeaderAuth": { "name": "" } }, "typeVersion": 4.2 }, { "id": "5287c40d-093e-4bbb-9323-10a9d98e8d4c", "name": "Check Validation", "type": "n8n-nodes-base.if", "position": [ 160, -80 ], "parameters": { "options": {}, "conditions": { "options": { "version": 3, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "a34d0f0a-2fa6-4a22-8aea-a980adf7ee4f", "operator": { "type": "string", "operation": "equals" }, "leftValue": "={{ $json.validationStatus }}", "rightValue": "PASS" } ] } }, "typeVersion": 2.3 }, { "id": "e0db9015-7675-4993-ad43-8eab2ade08cf", "name": "Create - Rejection Audit", "type": "n8n-nodes-base.googleSheets", "position": [ 384, 16 ], "parameters": { "columns": { "value": { "Step": "BUSINESS_VALIDATION", "ReqID": "={{ $json.ReqID }}", "Result": "FAILED", "Details": "={{ $json.validationReason }}", "EventID": "={{'EVT-' + $now.toFormat('yyyyMMddHHmmss') + '-' + $json.ReqID}}", "Timestamp": "={{$now.toISO()}}" }, "schema": [ { "id": "EventID", "type": "string", "display": true, "required": false, "displayName": "EventID", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "ReqID", "type": "string", "display": true, "required": false, "displayName": "ReqID", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Step", "type": "string", "display": true, "required": false, "displayName": "Step", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Result", "type": "string", "display": true, "required": false, "displayName": "Result", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Details", "type": "string", "display": true, "required": false, "displayName": "Details", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Timestamp", "type": "string", "display": true, "required": false, "displayName": "Timestamp", "defaultMatch": false, "canBeUsedToMatch": true } ], "mappingMode": "defineBelow", "matchingColumns": [], "attemptToConvertTypes": false, "convertFieldsToString": false }, "options": {}, "operation": "append", "sheetName": { "__rl": true, "mode": "list", "value": 862675080, "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1kiZ1930Z8rASFn7V18BVluTgV6uRwPsIfgS2GbuRE-I/edit#gid=862675080", "cachedResultName": "Audit_Logs" }, "documentId": { "__rl": true, "mode": "list", "value": "1kiZ1930Z8rASFn7V18BVluTgV6uRwPsIfgS2GbuRE-I", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1kiZ1930Z8rASFn7V18BVluTgV6uRwPsIfgS2GbuRE-I/edit?usp=drivesdk", "cachedResultName": "Autonomous_Procurement_System" } }, "credentials": { "googleSheetsOAuth2Api": { "name": "" } }, "typeVersion": 4.7 }, { "id": "9ee358f6-8b24-4380-bdf3-0246f361d3d0", "name": "Update - 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Notification Payload", "type": "n8n-nodes-base.set", "position": [ 1296, -160 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "13decc83-bac7-40a9-bf02-88b04e41e1dd", "name": "PONumber", "type": "string", "value": "={{ $('Create - Purchase Order Record').item.json.PONumber }}" }, { "id": "b8f97419-8675-4e9b-98e3-7d5bf4f90f1f", "name": "ReqID", "type": "string", "value": "={{ $('Create - Purchase Order Record').item.json.ReqID }}" }, { "id": "65f090b4-9d33-43cc-87d3-70d1614cbd22", "name": "SupplierName", "type": "string", "value": "={{ $('Create - Purchase Order Record').item.json.SupplierName }}" }, { "id": "0cee7d02-9e05-43dd-a6d1-3eb557e31a17", "name": "NotificationSubject", "type": "string", "value": "=Purchase Order Created - {{ $('Create - Purchase Order Record').item.json.PONumber }}" }, { "id": "9550d1bf-721c-476a-ba36-cf98374d495e", "name": "NotificationMessage", "type": "string", "value": "=PO {{ $('Create - Purchase Order Record').item.json.PONumber }} created successfully for {{ $('Create - Purchase Order Record').item.json.SupplierName }}" }, { "id": "723e4ea3-339f-46d3-a97b-9d10c316a8dc", "name": "NotificationStatus", "type": "string", "value": "={{ $('Code - Generate Purchase Order').item.json.AIDecision }}" }, { "id": "4e2c345e-d325-4bd8-9eda-0e94ad93b72c", "name": "NotificationAmount", "type": "string", "value": "={{ $('Create - Purchase Order Record').item.json.Currency + ' ' + $('Create - Purchase Order Record').item.json.TotalAmount}}" } ] } }, "typeVersion": 3.4 }, { "id": "4013d2b9-6e48-45ab-8e35-4c13292ca448", "name": "Notify - Procurement Team", "type": "n8n-nodes-base.gmail", "position": [ 1504, -160 ], "parameters": { "sendTo": "", "message": "=

{{$json.NotificationMessage}}

\n\n

\nReqID: {{$json.ReqID}}
\nSupplier: {{$json.SupplierName}}
\nItem: {{ $('Create - Purchase Order Record').item.json.ItemName }}
\nAmount: {{$json.NotificationAmount}}
\nRisk Score: {{ $('Create - Purchase Order Record').item.json.RiskScore }}
\nAI Reason: {{ $('Create - Purchase Order Record').item.json.AIReason }}

", "options": { "appendAttribution": false }, "subject": "={{$json.NotificationSubject}}" }, "credentials": { "gmailOAuth2": { "name": "" } }, "typeVersion": 2.1 }, { "id": "560a1adb-7aab-42a3-8e2e-afef2832c222", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [ -2208, -1008 ], "parameters": { "width": 704, "height": 784, "content": "## Autonomous Purchase Order Creation Workflow\n\n\nThis workflow automates the procurement process by converting approved requisitions into purchase orders with minimal human intervention.\n\nThe process begins by scanning the Approved_Requisitions sheet for records that are approved and not yet processed. Supplier information is then matched against the Suppliers master sheet to validate supplier availability, contract status, compliance status, and spending limits.\n\nBefore creating a purchase order, duplicate checks ensure that the same requisition is not processed multiple times. Business validation rules filter out requests that violate procurement policies. Valid requests are sent to an AI risk assessment stage powered by Groq, which provides a risk score and decision reasoning.\n\nApproved requests are transformed into purchase orders and stored in the Purchase_Orders sheet. All actions are logged in Audit_Logs for traceability. Requisition records are updated to prevent reprocessing, and stakeholders receive email notifications containing purchase order details.\n\n### Required Setup:\n\u2022 Google Sheets credentials\n\u2022 Groq API credential\n\u2022 Gmail credential\n\u2022 Spreadsheet with required sheets" }, "typeVersion": 1 }, { "id": "60084d3c-e461-4917-adf6-a60c6871f2e8", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [ -1472, -496 ], "parameters": { "color": 7, "width": 672, "height": 752, "content": "## Requisition Intake & Data Collection\n\nThis section initiates the procurement workflow by scanning the Approved_Requisitions sheet on a scheduled basis. Only approved requests that have not yet been processed are selected for further evaluation. The purpose of this stage is to ensure that downstream validation and purchase order creation operate on clean, eligible, and actionable procurement requests." }, "typeVersion": 1 }, { "id": "35c05e1f-2ce8-4e08-98cb-2e66a0732a52", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [ -784, -496 ], "parameters": { "color": 7, "width": 640, "height": 752, "content": "## Supplier Verification & Duplicate Prevention\n\nThis section enriches requisition records with supplier master data and prevents duplicate purchase order generation. Supplier details such as contract status, compliance status, and spending limits are retrieved and attached to each request. Existing purchase orders are checked to ensure the same requisition is never processed more than once." }, "typeVersion": 1 }, { "id": "04ea1f44-55e3-49be-a3e6-638d3fcff999", "name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [ -128, -496 ], "parameters": { "color": 7, "width": 416, "height": 752, "content": "## Procurement Policy Validation\n\nThis stage applies procurement business rules before AI evaluation. Requests are validated against supplier availability, active contracts, compliance requirements, and spending thresholds. Any requisition that violates company procurement policies is automatically rejected, logged for audit purposes, and prevented from continuing through the purchase order creation process." }, "typeVersion": 1 }, { "id": "9544cb49-7b32-4778-90b7-2da91b42eccd", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [ 304, -496 ], "parameters": { "color": 7, "width": 464, "height": 496, "content": "## AI Risk Assessment & PO Generation\n\nThis section uses Groq AI to perform an additional procurement risk review. The AI generates a decision, risk score, and explanation based on supplier and requisition details. Approved requests are then transformed into structured purchase orders with unique identifiers, ensuring standardized and traceable procurement record creation." }, "typeVersion": 1 }, { "id": "cb5328fb-afa2-483e-9986-25ecb12269a6", "name": "Sticky Note5", "type": "n8n-nodes-base.stickyNote", "position": [ 784, -496 ], "parameters": { "color": 7, "width": 960, "height": 592, "content": "## Purchase Order Processing & Notifications\n\nThis final section records procurement outcomes and communicates results to stakeholders. Purchase orders are stored in the Purchase_Orders sheet, requisition statuses are updated to prevent reprocessing, and audit entries are created for traceability. Notification data is prepared and delivered through email, ensuring visibility into completed procurement activities." }, "typeVersion": 1 } ], "active": false, "settings": { "binaryMode": "separate", "availableInMCP": false, "executionOrder": "v1" }, "versionId": "971585ea-147a-4fb1-b9f0-cd26621dc6b1", "nodeGroups": [], "connections": { "Check Validation": { "main": [ [ { "node": "AI - Risk Assessment", "type": "main", "index": 0 } ], [ { "node": "Create - Rejection Audit", "type": "main", "index": 0 } ] ] }, "AI - Risk Assessment": { "main": [ [ { "node": "Code - Generate Purchase Order", "type": "main", "index": 0 } ] ] }, "Create - Audit Trail": { "main": [ [ { "node": "Set - Notification Payload", "type": "main", "index": 0 } ] ] }, "Read - New Requisitions": { "main": [ [ { "node": "Filter - Approved & New Requests", "type": "main", "index": 0 } ] ] }, "Create - Rejection Audit": { "main": [ [ { "node": "Update - Requisition Rejected", "type": "main", "index": 0 } ] ] }, "Set - Notification Payload": { "main": [ [ { "node": "Notify - Procurement Team", "type": "main", "index": 0 } ] ] }, "Read - Supplier Master Data": { "main": [ [ { "node": "Code - Merge Supplier Details", "type": "main", "index": 0 } ] ] }, "Schedule - Procurement Scan": { "main": [ [ { "node": "Read - New Requisitions", "type": "main", "index": 0 } ] ] }, "Code - Merge Supplier Details": { "main": [ [ { "node": "Check - Existing Purchase Order", "type": "main", "index": 0 } ] ] }, "Code - Procurement Validation": { "main": [ [ { "node": "Check Validation", "type": "main", "index": 0 } ] ] }, "Code - Generate Purchase Order": { "main": [ [ { "node": "Create - Purchase Order Record", "type": "main", "index": 0 } ] ] }, "Create - Purchase Order Record": { "main": [ [ { "node": "Create - Audit Trail", "type": "main", "index": 0 }, { "node": "Update - Requisition Processed", "type": "main", "index": 0 } ] ] }, "Update - Requisition Processed": { "main": [ [ { "node": "Set - Notification Payload", "type": "main", "index": 0 } ] ] }, "Check - Existing Purchase Order": { "main": [ [ { "node": "Code - Procurement Validation", "type": "main", "index": 0 } ], [ { "node": "End - Duplicate Request", "type": "main", "index": 0 } ] ] }, "Filter - Approved & New Requests": { "main": [ [ { "node": "Read - Supplier Master Data", "type": "main", "index": 0 } ] ] } } }