Update manual position in potential invoice

What does this do? Updates an existing custom manual position in a potential invoice. You can modify the title and/or price of the position.

When to use:

• To correct the title or price of a manual position
• To adjust pricing before finalizing the invoice
• To update position details after initial creation

How it works:

• Updates the manual position stored in the potential invoice metadata
• Only custom manual positions (type: manual) can be updated
• Project manual positions (from project snapshots) are read-only and cannot be modified
• Both title and price must be provided (even if only one is changing)

Position requirements:

• Position must exist in the potential invoice
• Position must be a custom manual position (not a project position)
• Title and price are required

Invoice ID Format: The invoice ID follows the format: {type}::{projectId}::{dateFrom}::{dateTo}

• Example: SingleProject::0e9d033a-ab41-4212-8637-66c4e3b01fe2::2025-10-01::2025-10-31

Permission requirements: Requires Invoices.manage permission and access to the project.

curl -X PATCH "https://leadtime.app/api/public/billing/potential-invoices/SingleProject%3A%3A0e9d033a-ab41-4212-8637-66c4e3b01fe2%3A%3A2025-10-01%3A%3A2025-10-31/manual-positions/550e8400-e29b-41d4-a716-446655440000" \
  -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
  "price": 150,
  "title": "Workshop travel expenses"
}'

const response = await fetch("https://leadtime.app/api/public/billing/potential-invoices/SingleProject%3A%3A0e9d033a-ab41-4212-8637-66c4e3b01fe2%3A%3A2025-10-01%3A%3A2025-10-31/manual-positions/550e8400-e29b-41d4-a716-446655440000", {
  method: "PATCH",
  headers: {
    "Authorization": "Bearer YOUR_ACCESS_TOKEN",
    "Content-Type": "application/json"
  },
  body: "{\n  \"price\": 150,\n  \"title\": \"Workshop travel expenses\"\n}"
});

import requests

response = requests.patch(
    "https://leadtime.app/api/public/billing/potential-invoices/SingleProject%3A%3A0e9d033a-ab41-4212-8637-66c4e3b01fe2%3A%3A2025-10-01%3A%3A2025-10-31/manual-positions/550e8400-e29b-41d4-a716-446655440000",
    headers={
        "Authorization": "Bearer YOUR_ACCESS_TOKEN",
        "Content-Type": "application/json"
    },
    data="{\n  \"price\": 150,\n  \"title\": \"Workshop travel expenses\"\n}",
)

{
  "success": true
}