ST_CT_NON_DECLAR: Subcontractor or co-contractor not declared
What it means
French e-invoicing reason ST_CT_NON_DECLAR means the invoice was refused because the subcontractor or co-contractor who sent it is not declared on the contract.
The usual cause
This reason applies only to subcontracting and co-contracting, when the sender is not known on the contract.
How to fix it
Have the lead contractor or buyer declare you on the contract, then send the invoice again.
Once the file is corrected, check it again for free: Check an e-invoice
The code as published
Sous-traitant / cotraitant non déclaré Read the official document . Source: Spécifications externes, Annexe 7, Règles de gestion, version 1.9 (spécifications externes 3.2), published by Direction générale des Finances publiques (DGFiP), read on 8 November 2026.
Look at your file
Check the invoice against the rules this portal applies: Check an e-invoice. Check an e-invoice
Other Chorus Pro and PPF codes
- COORD_BANC_ERR Wrong bank details
- CREANCIER_ERR Unknown or different creditor
- DEST_ERR Wrong recipient
- DOUBLE_FACT Duplicate invoice data
- CMD_EJ_ERR Wrong or missing order number
- FACT_NON_CONFORME Invoice does not match the order
- JUSTIF_ABS Supporting document missing or insufficient
- MONTANT_ERR Wrong invoice amount
- SE_ERR Wrong recipient department
- TX_TVA_ERR Wrong VAT rate
- ROUTAGE_ERR Routing error
- CALCUL_ERR Calculation error
- NON_CONFORME Missing legally required information
- DEST_INC Unknown recipient
- ADR_ERR Electronic invoicing address wrong
- SIRET_ERR SIRET wrong or missing
- CODE_ROUTAGE_ERR Routing code wrong or missing
- REF_CT_ABSENT Contract reference missing
- REF_ERR Wrong reference
- PU_ERR Wrong unit prices
- REM_ERR Wrong discount
- QTE_ERR Wrong quantity invoiced
- ART_ERR Wrong item invoiced
- MODPAI_ERR Wrong payment terms
- DOUBLON Duplicate invoice
- MONTANTTOTAL_ERR Wrong total amount
- ERREUR_DONNEE_EJ Error in the commitment data
- EJ_ERR Commitment number wrong or does not exist