--- a/sat/tools/xml_tools.py	Thu Mar 16 15:56:11 2023 +0100
+++ b/sat/tools/xml_tools.py	Thu Mar 16 16:43:08 2023 +0100
@@ -20,7 +20,7 @@
 from collections import OrderedDict
 import html.entities
 import re
-from typing import Dict, Optional, Tuple, Union, Literal, overload
+from typing import Dict, Optional, Tuple, Union, Literal, overload, Iterable
 from xml.dom import NotFoundErr, minidom
 import xml.etree.ElementTree as ET
 from lxml import etree
@@ -1926,15 +1926,32 @@
             yield found
 
 
-def findAncestor(elt, name: str, namespace: Optional[str] = None) -> domish.Element:
-    """Retrieve ancestor of an element"""
+def findAncestor(
+    elt,
+    name: str,
+    namespace: Optional[Union[str, Iterable[str]]] = None
+    ) -> domish.Element:
+    """Retrieve ancestor of an element
+
+    @param elt: starting element, its parent will be checked recursively until the
+        required one if found
+    @param name: name of the element to find
+    @param namespace: namespace of the element to find
+        - None to find any element with that name
+        - a simple string to find the namespace
+        - several namespaces can be specified in an iterable, if an element with any of
+          this namespace and given name is found, it will match
+
+    """
+    if isinstance(namespace, str):
+        namespace = [namespace]
     current = elt.parent
     while True:
         if current is None:
             raise exceptions.NotFound(
                 f"Can't find any ancestor {name!r} (xmlns: {namespace!r})"
             )
-        if current.name == name and (namespace is None or current.uri == namespace):
+        if current.name == name and (namespace is None or current.uri in namespace):
             return current
         current = current.parent