diff --git a/.github/workflows/plugin_test.yaml b/.github/workflows/plugin_test.yaml
index a30967303..6b1b2e459 100644
--- a/.github/workflows/plugin_test.yaml
+++ b/.github/workflows/plugin_test.yaml
@@ -36,6 +36,9 @@ jobs:
           - plugin: pynxtools-xps
             branch: main
             tests_to_run: tests/.
+          - plugin: pynxtools-xrd
+            branch: main
+            tests_to_run: tests/.
           # - plugin: pynxtools-apm
           #   branch: main
           #   tests_to_run: tests/.
diff --git a/src/pynxtools/dataconverter/helpers.py b/src/pynxtools/dataconverter/helpers.py
index e9b35dffb..768fdbed0 100644
--- a/src/pynxtools/dataconverter/helpers.py
+++ b/src/pynxtools/dataconverter/helpers.py
@@ -577,23 +577,47 @@ def is_value_valid_element_of_enum(value, elist) -> Tuple[bool, list]:
 NUMPY_FLOAT_TYPES = (np.half, np.float16, np.single, np.double, np.longdouble)
 NUMPY_INT_TYPES = (np.short, np.intc, np.int_)
 NUMPY_UINT_TYPES = (np.ushort, np.uintc, np.uint)
-
+# np int for np version 1.26.0
+np_int = (
+    np.intc,
+    np.int_,
+    np.intp,
+    np.int8,
+    np.int16,
+    np.int32,
+    np.int64,
+    np.uint8,
+    np.uint16,
+    np.uint32,
+    np.uint64,
+    np.unsignedinteger,
+    np.signedinteger,
+)
+np_float = (np.float16, np.float32, np.float64, np.floating)
+np_bytes = (np.bytes_, np.byte, np.ubyte)
+np_char = (np.str_, np.char.chararray, *np_bytes)
+np_bool = (np.bool_,)
+np_complex = (np.complex64, np.complex128, np.cdouble, np.csingle)
 NEXUS_TO_PYTHON_DATA_TYPES = {
     "ISO8601": (str,),
-    "NX_BINARY": (bytes, bytearray, np.byte, np.ubyte, np.ndarray),
-    "NX_BOOLEAN": (bool, np.ndarray, np.bool_),
-    "NX_CHAR": (str, np.ndarray, np.char.chararray),
+    "NX_BINARY": (
+        bytes,
+        bytearray,
+        np.ndarray,
+        *np_bytes,
+    ),
+    "NX_BOOLEAN": (bool, np.ndarray, *np_bool),
+    "NX_CHAR": (str, np.ndarray, *np_char),
     "NX_DATE_TIME": (str,),
-    "NX_FLOAT": (float, np.ndarray, np.floating),
-    "NX_INT": (int, np.ndarray, np.signedinteger),
+    "NX_FLOAT": (float, np.ndarray, *np_float),
+    "NX_INT": (int, np.ndarray, *np_int),
     "NX_UINT": (np.ndarray, np.unsignedinteger),
     "NX_NUMBER": (
         int,
         float,
         np.ndarray,
-        np.signedinteger,
-        np.unsignedinteger,
-        np.floating,
+        *np_int,
+        *np_float,
         dict,
     ),
     "NX_POSINT": (
@@ -601,8 +625,18 @@ def is_value_valid_element_of_enum(value, elist) -> Tuple[bool, list]:
         np.ndarray,
         np.signedinteger,
     ),  # > 0 is checked in is_valid_data_field()
-    "NX_COMPLEX": (complex, np.ndarray, np.cdouble, np.csingle),
+    "NX_COMPLEX": (complex, np.ndarray, *np_complex),
     "NXDL_TYPE_UNAVAILABLE": (str,),  # Defaults to a string if a type is not provided.
+    "NX_CHAR_OR_NUMBER": (
+        str,
+        int,
+        float,
+        np.ndarray,
+        *np_char,
+        *np_int,
+        *np_float,
+        dict,
+    ),
 }
 
 
diff --git a/tests/dataconverter/test_helpers.py b/tests/dataconverter/test_helpers.py
index ddbcb2351..b8fed848d 100644
--- a/tests/dataconverter/test_helpers.py
+++ b/tests/dataconverter/test_helpers.py
@@ -261,6 +261,11 @@ def fixture_filled_test_data(template, tmp_path):
 ]
 TEMPLATE["optional"]["/@default"] = "Some NXroot attribute"
 
+# "The value at /ENTRY[my_entry]/NXODD_name[nxodd_name]/in"
+# "t_value should be one of: (<class 'int'>, <cla"
+# "ss 'numpy.ndarray'>, <class 'numpy.signedinteger'>),"
+# " as defined in the NXDL as NX_INT."
+
 
 # pylint: disable=too-many-arguments
 @pytest.mark.parametrize(
@@ -274,9 +279,14 @@ def fixture_filled_test_data(template, tmp_path):
             ),
             (
                 "The value at /ENTRY[my_entry]/NXODD_name[nxodd_name]/in"
-                "t_value should be one of: (<class 'int'>, <cla"
-                "ss 'numpy.ndarray'>, <class 'numpy.signedinteger'>),"
-                " as defined in the NXDL as NX_INT."
+                "t_value should be one of: (<class 'int'>, <class 'numpy"
+                ".ndarray'>, <class 'numpy.int32'>, <class 'numpy.int64'>,"
+                " <class 'numpy.int64'>, <class 'numpy.int8'>, <class 'numpy"
+                ".int16'>, <class 'numpy.int32'>, <class 'numpy.int64'>, "
+                "<class 'numpy.uint8'>, <class 'numpy.uint16'>, <class 'numpy"
+                ".uint32'>, <class 'numpy.uint64'>, <class 'numpy.unsignedi"
+                "nteger'>, <class 'numpy.signedinteger'>), as defined in "
+                "the NXDL as NX_INT."
             ),
             id="string-instead-of-int",
         ),