diff --git a/app/routes/automation.py b/app/routes/automation.py
index 81194a2..5c83152 100644
--- a/app/routes/automation.py
+++ b/app/routes/automation.py
@@ -59,7 +59,7 @@ SELECT
     rel.PRECIO,
     rel.FECHA_REPORTADO,
     m.COD_ESPECIALIDAD,
-    COALESCE(NULLIF(TRIM(r.USUARIO), ''), TRIM(m.CODIGO), '') AS profesional
+    COALESCE(NULLIF(TRIM(m.CODIGO), ''), NULLIF(TRIM(r.USUARIO), ''), '') AS profesional
 FROM RECEPCION r
 JOIN RELACION rel ON rel.IDRECEPCION = r.IDRECEPCION
 LEFT JOIN MEDICO m ON m.CODIGO = r.COD_MEDICO
@@ -229,10 +229,12 @@ async def run_automation(
     endpoint = f"{TNS_BASE}/v2/rda/RdaPaciente/Insertar"
     if api_sucursal:
         endpoint += f"?codigosucursal={api_sucursal}"
+    prof_def = configs.get("profesional_default", "")
+    esp_def = configs.get("especialidad_default", "")
 
     async with httpx.AsyncClient(timeout=timeout) as client:
         for id_recepcion, grupo_rows in grupos.items():
-            rda_json = generar_rda_paciente(grupo_rows)
+            rda_json = generar_rda_paciente(grupo_rows, prof_def, esp_def)
             factura = str(grupo_rows[0].get("NUM_FACTURA", id_recepcion))
             try:
                 resp = await client.post(endpoint, json=rda_json, headers=headers)
diff --git a/app/routes/config.py b/app/routes/config.py
index 5bd8677..16616bd 100644
--- a/app/routes/config.py
+++ b/app/routes/config.py
@@ -23,6 +23,8 @@ DEFAULT_KEYS = [
     ("tns_password", "Nicolas2796*+"),
     ("num_documento_obligado", ""),
     ("cod_prestador", ""),
+    ("profesional_default", ""),
+    ("especialidad_default", ""),
 ]
 
 
diff --git a/app/routes/queries.py b/app/routes/queries.py
index 6c9d675..a6e9ee2 100644
--- a/app/routes/queries.py
+++ b/app/routes/queries.py
@@ -51,7 +51,7 @@ WHERE p.DOCIDENT = :doc_num""",
     rel.PRECIO,
     rel.FECHA_REPORTADO,
     m.COD_ESPECIALIDAD,
-    COALESCE(NULLIF(TRIM(r.USUARIO), ''), TRIM(m.CODIGO), '') AS profesional
+    COALESCE(NULLIF(TRIM(m.CODIGO), ''), NULLIF(TRIM(r.USUARIO), ''), '') AS profesional
 FROM RECEPCION r
 JOIN RELACION rel ON rel.IDRECEPCION = r.IDRECEPCION
 LEFT JOIN MEDICO m ON m.CODIGO = r.COD_MEDICO
@@ -79,7 +79,7 @@ WHERE r.NUM_FACTURA = :num_factura""",
     rel.PRECIO,
     rel.FECHA_REPORTADO,
     m.COD_ESPECIALIDAD,
-    COALESCE(NULLIF(TRIM(r.USUARIO), ''), TRIM(m.CODIGO), '') AS profesional
+    COALESCE(NULLIF(TRIM(m.CODIGO), ''), NULLIF(TRIM(r.USUARIO), ''), '') AS profesional
 FROM RECEPCION r
 JOIN RELACION rel ON rel.IDRECEPCION = r.IDRECEPCION
 LEFT JOIN MEDICO m ON m.CODIGO = r.COD_MEDICO
@@ -101,6 +101,11 @@ def ensure_defaults():
                 "INSERT INTO queries (name, query_type, query_text, description) VALUES (?, ?, ?, ?)",
                 (q["name"], q["query_type"], q["query_text"], q["description"]),
             )
+        else:
+            conn.execute(
+                "UPDATE queries SET query_text = ?, description = ? WHERE name = ?",
+                (q["query_text"], q["description"], q["name"]),
+            )
     conn.commit()
     conn.close()
 
diff --git a/app/routes/transaccion.py b/app/routes/transaccion.py
index 6841766..0d756bd 100644
--- a/app/routes/transaccion.py
+++ b/app/routes/transaccion.py
@@ -76,7 +76,9 @@ async def preview_transaccion(
         return JSONResponse({"success": False, "message": error})
 
     grupos = agrupar_por_recepcion(rows)
-    json_result = [generar_rda_paciente(grupo) for grupo in grupos.values()]
+    prof_def = configs.get("profesional_default", "")
+    esp_def = configs.get("especialidad_default", "")
+    json_result = [generar_rda_paciente(grupo, prof_def, esp_def) for grupo in grupos.values()]
 
     return JSONResponse({
         "success": True,
@@ -153,10 +155,12 @@ async def send_transaccion(
     total_enviados = 0
     total_errores = 0
     resultados = []
+    prof_def = configs.get("profesional_default", "")
+    esp_def = configs.get("especialidad_default", "")
 
     async with httpx.AsyncClient(timeout=int(configs.get("api_timeout", 30))) as client:
         for id_recepcion, grupo_rows in grupos.items():
-            trans_json = generar_rda_paciente(grupo_rows)
+            trans_json = generar_rda_paciente(grupo_rows, prof_def, esp_def)
 
             status_ok = False
             response_text = ""
diff --git a/app/services/json_generator.py b/app/services/json_generator.py
index 6975a23..ac966ca 100644
--- a/app/services/json_generator.py
+++ b/app/services/json_generator.py
@@ -96,7 +96,7 @@ def agrupar_por_recepcion(rows: list) -> dict:
     return grupos
 
 
-def generar_rda_paciente(rows: list) -> dict:
+def generar_rda_paciente(rows: list, default_profesional: str = "", default_especialidad: str = "") -> dict:
     if not rows:
         return {}
     h = rows[0]
@@ -126,8 +126,8 @@ def generar_rda_paciente(rows: list) -> dict:
             "porcentajeIva": 0,
             "impConsumo": 0,
             "observacion": "",
-            "profesional": str(h.get("profesional") or "").strip(),
-            "especialidad": (lambda e: e if e not in (".", "-", "0", "00") else "")(str(row.get("COD_ESPECIALIDAD") or "").strip()),
+            "profesional": str(row.get("profesional") or "").strip() or default_profesional,
+            "especialidad": (lambda e: e if e not in (".", "-", "0", "00") else default_especialidad)(str(row.get("COD_ESPECIALIDAD") or "").strip()),
             "diagnosticoprincipal": str(h.get("DIAG_PPAL") or "").strip(),
             "fechaHoraRealizacion": fecha_real or egreso,
         })