diff --git a/app/routes/test_rda.py b/app/routes/test_rda.py
index 5914086..c481f1b 100644
--- a/app/routes/test_rda.py
+++ b/app/routes/test_rda.py
@@ -222,8 +222,16 @@ async def test_enviar(request: Request, user: dict = Depends(get_current_user)):
         return JSONResponse({"error": f"Error Firebird: {fb_msg}"})
 
     if modo == "factura":
-        where = "r.NUM_FACTURA = :val"
-        params = {"val": int(valor)}
+        import re as _re
+        nums = _re.findall(r'\d+', valor)
+        num_val = int(nums[-1]) if nums else 0
+        prefix = _re.sub(r'[\d\s]', '', valor).strip().upper()
+        if prefix:
+            where = "r.NUM_FACTURA = :val AND TRIM(r.PREFIJO) = :prefijo"
+            params = {"val": num_val, "prefijo": prefix}
+        else:
+            where = "r.NUM_FACTURA = :val"
+            params = {"val": num_val}
     else:
         where = "r.IDRECEPCION = :val"
         params = {"val": int(valor)}
diff --git a/app/routes/transaccion.py b/app/routes/transaccion.py
index eb25fa9..1a1aff7 100644
--- a/app/routes/transaccion.py
+++ b/app/routes/transaccion.py
@@ -26,9 +26,12 @@ def _query_rows(cfg, query_text, factura, fecha_inicio, fecha_fin):
         return None, msg, None
     nums = _re.findall(r'\d+', factura or "")
     num_val = int(nums[-1]) if nums else (factura or "")
+    prefix = _re.sub(r'[\d\s]', '', factura or "").strip().upper()
     params = {"fecha_ini": f"{fecha_inicio} 00:00:00", "fecha_fin": f"{fecha_fin} 23:59:59"}
     if ":num_factura" in query_text:
         params["num_factura"] = num_val
+    if ":prefijo" in query_text:
+        params["prefijo"] = prefix
     ok2, err, rows = fb.execute_query(query_text, params)
     fb.disconnect()
     if not ok2:
diff --git a/app/services/json_generator.py b/app/services/json_generator.py
index 9354d5c..efd9f4b 100644
--- a/app/services/json_generator.py
+++ b/app/services/json_generator.py
@@ -153,7 +153,7 @@ def generar_rda_paciente(rows: list, default_profesional: str = "", default_espe
             "codigoBodega": "00",
             "cantidad": 1,
             "tipoUnidad": "D",
-            "valor": float(row.get("PRECIO") or 0),
+            "valor": 0,
             "descuento": float(row.get("DESCUENTO") or 0),
             "porcentajeIva": 0,
             "impConsumo": 0,