diff --git a/modelbaker/db_factory/pg_command_config_manager.py b/modelbaker/db_factory/pg_command_config_manager.py
index 660fd39..99d61dc 100644
--- a/modelbaker/db_factory/pg_command_config_manager.py
+++ b/modelbaker/db_factory/pg_command_config_manager.py
@@ -20,7 +20,7 @@
 from qgis.PyQt.QtCore import QSettings
 
 from ..iliwrapper.ili2dbconfig import Ili2DbCommandConfiguration
-from ..libs import pgserviceparser
+from ..utils import db_utils
 from .db_command_config_manager import DbCommandConfigManager
 
 
@@ -63,50 +63,38 @@ def get_uri(self, su: bool = False, qgis: bool = False) -> str:
             uri += ["service='{}'".format(self.configuration.dbservice)]
 
         # only set the params when they are not available in the service
-        if not pgserviceparser.service_config(self.configuration.dbservice).get(
-            "sslmode", None
-        ):
+        service_config, _ = db_utils.get_service_config(self.configuration.dbservice)
+        if not service_config or not service_config.get("sslmode", None):
             if self.configuration.sslmode:
                 uri += ["sslmode='{}'".format(self.configuration.sslmode)]
 
-        if not pgserviceparser.service_config(self.configuration.dbservice).get(
-            "host", None
-        ):
+        if not service_config or not service_config.get("host", None):
             uri += ["host={}".format(self.configuration.dbhost)]
 
-        if not pgserviceparser.service_config(self.configuration.dbservice).get(
-            "port", None
-        ):
+        if not service_config or not service_config.get("port", None):
             if self.configuration.dbport:
                 uri += ["port={}".format(self.configuration.dbport)]
 
-        if not pgserviceparser.service_config(self.configuration.dbservice).get(
-            "dbname", None
-        ):
+        if not service_config or not service_config.get("dbname", None):
             uri += ["dbname='{}'".format(self.configuration.database)]
 
         # only provide authcfg to the uri when it's needed for QGIS specific things
         if (
             qgis
             and self.configuration.dbauthid
-            and not (
-                pgserviceparser.service_config(self.configuration.dbservice).get(
-                    "user", None
-                )
-                and pgserviceparser.service_config(self.configuration.dbservice).get(
-                    "password", None
+            and (
+                not service_config
+                or not (
+                    service_config.get("user", None)
+                    and service_config.get("password", None)
                 )
             )
         ):
             uri += ["authcfg={}".format(self.configuration.dbauthid)]
         else:
-            if not pgserviceparser.service_config(self.configuration.dbservice).get(
-                "user", None
-            ):
+            if not service_config or not service_config.get("user", None):
                 uri += ["user={}".format(self.configuration.dbusr)]
-            if not pgserviceparser.service_config(self.configuration.dbservice).get(
-                "password", None
-            ):
+            if not service_config or not service_config.get("password", None):
                 if self.configuration.dbpwd:
                     uri += ["password={}".format(self.configuration.dbpwd)]
 
diff --git a/modelbaker/utils/db_utils.py b/modelbaker/utils/db_utils.py
index 8251774..aba8eee 100644
--- a/modelbaker/utils/db_utils.py
+++ b/modelbaker/utils/db_utils.py
@@ -74,7 +74,7 @@ def get_configuration_from_sourceprovider(provider, configuration):
         layer_source = QgsDataSourceUri(provider.dataSourceUri())
         mode = DbIliMode.pg
         configuration.dbservice = layer_source.service()
-        service_map = pgserviceparser.service_config(configuration.dbservice)
+        service_map, _ = get_service_config(configuration.dbservice)
         if layer_source.authConfigId():
             configuration.dbauthid = layer_source.authConfigId()
             authconfig_map = get_authconfig_map(configuration.dbauthid)
@@ -152,3 +152,36 @@ def db_ili_version(configuration):
     db_connector = get_db_connector(configuration)
     if db_connector:
         return db_connector.ili_version()
+
+
+def get_service_names():
+    """
+    Provides the names of the available services in the PostgreSQL connection service file.
+    """
+    try:
+        return pgserviceparser.service_names(), None
+    except pgserviceparser.ServiceFileNotFound as sfe:
+        return (
+            [],
+            f"Services cannot be retrieved, since no service file {str(sfe)} available.",
+        )
+
+
+def get_service_config(servicename: str):
+    """
+    Provides the service configuration of a given service from the PostgreSQL connection service file.
+    """
+    if not servicename:
+        return {}, f"No servicename given."
+    try:
+        return pgserviceparser.service_config(servicename), None
+    except pgserviceparser.ServiceFileNotFound as sfe:
+        return (
+            {},
+            f"The service {servicename} cannot be found, since no service file {str(sfe)} available.",
+        )
+    except pgserviceparser.ServiceNotFound:
+        return (
+            {},
+            f"The service {servicename} cannot be found in the service file.",
+        )