diff --git a/pandora_console/include/functions_api.php b/pandora_console/include/functions_api.php
old mode 100755
new mode 100644
index 95ef87da7d..4b293696df
--- a/pandora_console/include/functions_api.php
+++ b/pandora_console/include/functions_api.php
@@ -1906,6 +1906,12 @@ function api_set_update_network_module($id_module, $thrash1, $other, $thrash3) {
 				return;
 			}
 		}
+		// Check if agent exists
+		$check_id_agent = db_get_value ('id_agente', 'tagente', 'id_agente', $other['data'][0]);
+		if (!$check_id_agent) {
+			returnError('error_update_data_module', __('Error updating network module. Id_agent doesn\'t exists.'));
+			return;
+		}
 	}
 	
 	$network_module_fields = array('id_agente',
@@ -2103,6 +2109,12 @@ function api_set_update_plugin_module($id_module, $thrash1, $other, $thrash3) {
 				return;
 			}
 		}
+		// Check if agent exists
+		$check_id_agent = db_get_value ('id_agente', 'tagente', 'id_agente', $other['data'][0]);
+		if (!$check_id_agent) {
+			returnError('error_update_data_module', __('Error updating plugin module. Id_agent doesn\'t exists.'));
+			return;
+		}
 	}
 	
 	$plugin_module_fields = array('id_agente',
@@ -2422,6 +2434,12 @@ function api_set_update_data_module($id_module, $thrash1, $other, $thrash3) {
 				return;
 			}
 		}
+		// Check if agent exists
+		$check_id_agent = db_get_value ('id_agente', 'tagente', 'id_agente', $other['data'][0]);
+		if (!$check_id_agent) {
+			returnError('error_update_data_module', __('Error updating data module. Id_agent doesn\'t exists.'));
+			return;
+		}
 	}
 	
 	$data_module_fields = array('id_agente',
@@ -2679,6 +2697,12 @@ function api_set_update_snmp_module($id_module, $thrash1, $other, $thrash3) {
 				return;
 			}
 		}
+		// Check if agent exists
+		$check_id_agent = db_get_value ('id_agente', 'tagente', 'id_agente', $other['data'][0]);
+		if (!$check_id_agent) {
+			returnError('error_update_data_module', __('Error updating snmp module. Id_agent doesn\'t exists.'));
+			return;
+		}
 	}
 	
 	# SNMP version 3