Guatemala FEL - Credit Note (NCRE) Workflow

What you get

Closes the gap in Odoo's standard "Add credit note" wizard for Guatemala SAT FEL: auto-populates the original FEL document reference, captures a SAT-compliant MotivoAjuste, and refuses to post an NCRE without one.

Why this matters

SAT requires every NCRE XML to carry the certified original FACT plus a non-empty MotivoAjuste. Out of the box, Odoo's standard "Add credit note" wizard collects neither. Without this module, your NCREs end up missing the reference (rejected by SAT) or with MotivoAjuste="-" (auditor questions later). This is a tiny module but it is the difference between an NCRE flow that just works and one that gets rejected.

Key features

• Two new fields on account.move: original_fel_invoice_id (Many2one) and credit_note_reason (SAT MotivoAjuste)
• Overrides account.move.reversal._prepare_default_reversal to auto-populate both fields when reversing a FEL-certified invoice
• Validates reason length (>= 6 chars) at wizard time AND at post time
• "Emit FEL Credit Note (NCRE)" header button on posted FEL FACTs - opens the standard reversal wizard with the right context
• Banner on the credit note form showing the original FEL FACT link + reason

Compatibility

• Odoo 17.0 Community / Enterprise
• Depends on Guatemala FEL - Full SAT Electronic Invoicing >= 17.0.4.0.0 (sold separately, $999)

Need help installing?

If you would rather we install + configure this for you (NCRE smoke test included), see our Installation & Setup Service.

LGPL-3. Digital download, no refunds - see refund policy.