1. Check the status before editing
- Open the invoice from Invoices.
- Look at the status next to the title.
- If it is Draft, you can keep adjusting the invoice before sending it.
- If it is already Sent or Paid, review the detail before trying to change it.

2. If the invoice was already sent
- Check total, balance due, due date, and services.
- If the customer needs a change, create a corrected invoice instead of changing the document they already received.
- Use a clear note to explain what the new invoice replaces.
- Do not record a payment until you confirm which invoice you will use for collection.
3. If the invoice was already paid
- IMPULSO shows that a paid invoice cannot be edited.
- Keep the original invoice so the payment history stays clear.
- If there was a mistake, create a corrected invoice or document the adjustment according to your business process.
- Review payment history before following up with the customer.

States you may see
- Draft
Means: You are still preparing the invoice. Next step: Edit and review before sending.
- Sent
Means: The customer already received the invoice. Next step: Create a correction if the customer needs changes.
- Partial Payment
Means: A payment exists, but a balance remains. Next step: Confirm the balance before correcting or collecting.
- Paid
Means: The invoice has no balance due and cannot be edited from this flow. Next step: Review history or create a correction if needed.
- Cancelled
Means: The invoice should no longer be collected. Next step: Create a new invoice if you need to bill again.
