diff --git a/src/openeo_grass_gis_driver/actinia_processing/base.py b/src/openeo_grass_gis_driver/actinia_processing/base.py
index 957fa8ea..b8130466 100644
--- a/src/openeo_grass_gis_driver/actinia_processing/base.py
+++ b/src/openeo_grass_gis_driver/actinia_processing/base.py
@@ -118,9 +118,8 @@ def from_string(name: str):
             return DataObject(
                 name=layer_name,
                 datatype=GrassDataType.STAC,
-                mapset="PERMANENT",
-                location="latlong_wgs84",
-                instance=mapset)
+                mapset=mapset,
+                location="latlong_wgs84")
 
         raise Exception(f"Unsupported object type <{datatype}>")
 
diff --git a/src/openeo_grass_gis_driver/actinia_processing/load_collection_process.py b/src/openeo_grass_gis_driver/actinia_processing/load_collection_process.py
index 90642e73..19984e3c 100644
--- a/src/openeo_grass_gis_driver/actinia_processing/load_collection_process.py
+++ b/src/openeo_grass_gis_driver/actinia_processing/load_collection_process.py
@@ -259,7 +259,7 @@ def create_process_chain_entry(input_object: DataObject,
             "flags": "g"}
 
     elif input_object.is_stac():
-        instance_id = input_object.instance
+        instance_id = input_object.mapset
         collection_id = f"stac.{instance_id}.rastercube.{input_object.name}"
         strds_name = (output_object.grass_name()).replace('@', '_')
         # Define the import process of the STAC collection
@@ -438,6 +438,10 @@ def get_process_list(node: Node):
         output_object = DataObject(
             name=create_output_name(input_object.name, node),
             datatype=input_object.datatype)
+    elif input_object.is_stac():
+        output_object = DataObject(
+            name=create_output_name(input_object.name, node),
+            datatype=input_object.datatype)
     else:
         output_object = input_object