diff --git a/addons/l10n_ar/i18n/es.po b/addons/l10n_ar/i18n/es.po
index d7944cea771..80ac25d90f5 100644
--- a/addons/l10n_ar/i18n/es.po
+++ b/addons/l10n_ar/i18n/es.po
@@ -1190,10 +1190,9 @@ msgstr "El dígito de validación no es válido para \"%s\""
 #. module: l10n_ar
 #: code:addons/l10n_ar/models/account_move.py:0
 #, python-format
-msgid "There must be one and only one VAT tax per line. Check line \"%s\""
+msgid "There should be a single tax from the \"VAT\" tax group per line, add it to \"%s\". If you already have it, please check the tax configuration, in advanced options, in the corresponding field \"Tax Group\"."
 msgstr ""
-"Debe haber un único y solo un impuesto de IVA por línea. Revise la línea "
-"\"%s\""
+"Debe haber un único impuesto del grupo de impuestos \"IVA\" por línea, agréguelo a \"%s\". En caso de tenerlo, revise la configuración del impuesto, en opciones avanzadas, en el campo correspondiente \"Grupo de Impuestos\"."
 
 #. module: l10n_ar
 #: model:ir.model.fields,help:l10n_ar.field_res_country__l10n_ar_afip_code
diff --git a/addons/l10n_ar/i18n/l10n_ar.pot b/addons/l10n_ar/i18n/l10n_ar.pot
index 6ea97894df3..5f7a5a8bd1a 100644
--- a/addons/l10n_ar/i18n/l10n_ar.pot
+++ b/addons/l10n_ar/i18n/l10n_ar.pot
@@ -1143,7 +1143,7 @@ msgstr ""
 #. module: l10n_ar
 #: code:addons/l10n_ar/models/account_move.py:0
 #, python-format
-msgid "There must be one and only one VAT tax per line. Check line \"%s\""
+msgid "There should be a single tax from the \"VAT\" tax group per line, add it to \"%s\". If you already have it, please check the tax configuration, in advanced options, in the corresponding field \"Tax Group\"."
 msgstr ""
 
 #. module: l10n_ar
diff --git a/addons/l10n_ar/models/account_move.py b/addons/l10n_ar/models/account_move.py
index 26249a1f4e0..c5ed4d1fbab 100644
--- a/addons/l10n_ar/models/account_move.py
+++ b/addons/l10n_ar/models/account_move.py
@@ -117,7 +117,8 @@ class AccountMove(models.Model):
             for line in inv.mapped('invoice_line_ids').filtered(lambda x: x.display_type not in ('line_section', 'line_note')):
                 vat_taxes = line.tax_ids.filtered(lambda x: x.tax_group_id.l10n_ar_vat_afip_code)
                 if len(vat_taxes) != 1:
-                    raise UserError(_('There must be one and only one VAT tax per line. Check line "%s"', line.name))
+                    raise UserError(_('There should be a single tax from the "VAT" tax group per line, add it to "%s". If you already have it, please check the tax configuration, in advanced options, in the corresponding field "Tax Group".') % line.name)
+
                 elif purchase_aliquots == 'zero' and vat_taxes.tax_group_id.l10n_ar_vat_afip_code != '0':
                     raise UserError(_('On invoice id "%s" you must use VAT Not Applicable on every line.')  % inv.id)
                 elif purchase_aliquots == 'not_zero' and vat_taxes.tax_group_id.l10n_ar_vat_afip_code == '0':
diff --git a/doc/cla/corporate/adhoc.md b/doc/cla/corporate/adhoc.md
index 87fd245b061..959ba38b47a 100644
--- a/doc/cla/corporate/adhoc.md
+++ b/doc/cla/corporate/adhoc.md
@@ -21,3 +21,4 @@ Juan Ignacio Carreras jc@adhoc.com.ar https://github.com/jcadhoc
 Joel Zilli joz@adhoc.com.ar https://github.com/JoelZilli
 Augusto Weiss awe@adhoc.com.ar https://github.com/augusto-weiss
 Pablo Montenegro pam@adhoc.com.ar https://github.com/pablohmontenegro
+Ignacio Cainelli ica@adhoc.com.ar https://github.com/ica-adhoc
\ No newline at end of file