diff --git a/source/app/models/main.py b/source/app/models/main.py
index f6a5d15..492befc 100644
--- a/source/app/models/main.py
+++ b/source/app/models/main.py
@@ -2966,6 +2966,16 @@ class Socios(BaseModel):
         fields.pop('accounts', '')
         regimenes = fields.pop('regimenes', ())
 
+        w = (
+            (Socios.rfc==fields['rfc']) &
+            (Socios.slug==fields['slug']) &
+            (Socios.id!=id)
+        )
+        if Socios.select().where(w).exists():
+            msg = 'Ya existe otro emisor con este RFC y Razón Social'
+            data = {'ok': False, 'row': {}, 'new': True, 'msg': msg}
+            return data
+
         try:
             q = Socios.update(**fields).where(Socios.id==id)
             q.execute()