Create Purchase Invoice Skill

Create Purchase Invoice Skill

Creates a purchase invoice (PI) record in the NexERP system. A purchase invoice represents goods/​services received from a supplier with payment obligations.

Usage

python main.py \
  --supplier-name "ACTION BOLT" \
  --invoice-date "2025-10-26" \
  --items '[{"product_name": "WIRE D1.2", "quantity": 25, "unit_price": 10.50}]' \
  --json

Required Fields

• --supplier-name: Supplier name (fuzzy match supported)
• --invoice-date: Invoice date (YYYY-MM-DD format)
• --items: JSON array of line items

Item Fields

Each item must have:

• product_name: Product name or SKU (fuzzy match supported)
• quantity: Quantity ordered (positive number)
• unit_price: Price per unit

Optional item fields:

• discount: Line discount percentage (0-100)
• remark: Line item remark/​notes

Optional Invoice Fields

• --supplier-ref: Supplier's invoice reference number
• --tax-rate: Tax rate as decimal (default: 0.08 for 8% SST)
• --remark: Invoice remark/​notes

Output

Returns JSON with invoice details:

{
  "success": true,
  "invoice_number": "PI25100047",
  "txn_id": 2185,
  "supplier": "ACTION BOLT & NUTS SDN BHD",
  "invoice_date": "2025-10-26",
  "items_count": 1,
  "subtotal": 262.50,
  "tax": 21.00,
  "grand_total": 283.50
}

Error Handling

Returns error JSON if:

• Supplier not found (suggests alternatives)
• Product not found for any item
• Invalid date format
• Invalid amounts or quantities
• Database connection fails

Database Tables

Writes to 3 tables:

1. tbl_pinvoice_txn - Invoice header
2. tbl_pinvoice_item - Line items
3. tbl_pinvoice_movement - Stock movement audit

Document Number Format

Invoice numbers follow pattern: PI{YY}{MM}{NNNN}

• Example: PI25100047 = October 2025, invoice #47

Business Rules

• Supplier must exist and be active (Status_i = 1)
• Products must exist in tbl_product_code
• Invoice date must be valid date format
• Quantities must be positive
• Amounts rounded to 2 decimal places
• Default tax rate: 8% (Malaysian SST)
• Automatic calculation: SubTotal + Tax = GrandTotal

Integration

This skill is called by the Database Agent after the Document Agent extracts data from uploaded purchase invoice images.

Examples

Single Item Invoice

python main.py \
  --supplier-name "ACTION" \
  --invoice-date "2025-10-26" \
  --items '[{"product_name": "WIRE D1.2-L105.8", "quantity": 25, "unit_price": 10.50}]' \
  --json

Multi-Item Invoice

python main.py \
  --supplier-name "NINGBO" \
  --invoice-date "2025-10-26" \
  --supplier-ref "INV-2025-ABC" \
  --items '[
    {"product_name": "WIRE D1.2", "quantity": 100, "unit_price": 5.00},
    {"product_name": "BOLT M10", "quantity": 500, "unit_price": 0.50, "discount": 10}
  ]' \
  --remark "Urgent delivery" \
  --json

With Custom Tax Rate

python main.py \
  --supplier-name "Dell" \
  --invoice-date "2025-10-26" \
  --items '[{"product_name": "Laptop", "quantity": 1, "unit_price": 3500.00}]' \
  --tax-rate 0.06 \
  --json

Testing

# Test with verbose output
python main.py --supplier-name "ACTION" --invoice-date "2025-10-26" \
  --items '[{"product_name": "WIRE", "quantity": 10, "unit_price": 5.00}]' \
  --verbose --json

# Test error handling (invalid supplier)
python main.py --supplier-name "XYZ_NONEXISTENT" --invoice-date "2025-10-26" \
  --items '[{"product_name": "WIRE", "quantity": 10, "unit_price": 5.00}]' \
  --json

Exit Codes

• 0: Success
• 1: Error (invalid input, database error)
• 2: Not found (supplier/​product not found)