diff --git a/src/servala/api/views.py b/src/servala/api/views.py
index 5fdb91a..015e091 100644
--- a/src/servala/api/views.py
+++ b/src/servala/api/views.py
@@ -239,9 +239,9 @@ The Servala Team"""
                 service_offering = ServiceOffering.objects.get(
                     osb_plan_id=plan_id, service=service
                 )
-        except Service.DoesNotExist:
+        except Service.DoesNotExist:  # pragma: no-cover
             return self._error(f"Unknown service_id: {service_id}")
-        except ServiceOffering.DoesNotExist:
+        except ServiceOffering.DoesNotExist:  # pragma: no-cover
             return self._error(
                 f"Unknown plan_id: {plan_id} for service_id: {service_id}"
             )
@@ -284,7 +284,7 @@ The Servala Team"""
 
                 if service_instance:
                     organization = service_instance.organization
-            except Exception:
+            except Exception:  # pragma: no cover
                 pass
 
             description_parts = [f"Action: {action}", f"Service: {service.name}"]
diff --git a/src/servala/core/crd/forms.py b/src/servala/core/crd/forms.py
index 659684e..0f825ce 100644
--- a/src/servala/core/crd/forms.py
+++ b/src/servala/core/crd/forms.py
@@ -1,10 +1,12 @@
+from contextlib import suppress
+
 from django import forms
 from django.core.validators import MaxValueValidator, MinValueValidator
 from django.forms.models import ModelForm, ModelFormMetaclass
 
 from servala.core.crd.utils import deslugify
 from servala.core.models import ControlPlaneCRD
-from servala.frontend.forms.widgets import DynamicArrayWidget
+from servala.frontend.forms.widgets import DynamicArrayWidget, NumberInputWithAddon
 
 # Fields that must be present in every form
 MANDATORY_FIELDS = ["name"]
@@ -25,6 +27,11 @@ DEFAULT_FIELD_CONFIGS = {
         "help_text": "Domain names for accessing this service",
         "required": False,
     },
+    "spec.parameters.size.disk": {
+        "type": "number",
+        "label": "Disk size",
+        "addon_text": "Gi",
+    },
 }
 
 
@@ -335,6 +342,19 @@ class CustomFormMixin(FormGeneratorMixin):
                 if field_type == "number":
                     min_val = field_config.get("min_value")
                     max_val = field_config.get("max_value")
+                    unit = field_config.get("addon_text")
+
+                    if unit:
+                        field.widget = NumberInputWithAddon(addon_text=unit)
+                        field.addon_text = unit
+                        value = self.initial.get(field_name)
+                        if value and isinstance(value, str) and value.endswith(unit):
+                            numeric_value = value[: -len(unit)]
+                            with suppress(ValueError):
+                                if "." in numeric_value:
+                                    self.initial[field_name] = float(numeric_value)
+                                else:
+                                    self.initial[field_name] = int(numeric_value)
 
                     validators = []
                     if min_val is not None:
@@ -406,6 +426,11 @@ class CustomFormMixin(FormGeneratorMixin):
 
             mapping = field_name
             value = self.cleaned_data.get(field_name)
+            field = self.fields[field_name]
+
+            if addon_text := getattr(field, "addon_text", None):
+                value = f"{value}{addon_text}"
+
             parts = mapping.split(".")
             current = nested
             for part in parts[:-1]:
diff --git a/src/servala/frontend/forms/widgets.py b/src/servala/frontend/forms/widgets.py
index d67030f..99b7a59 100644
--- a/src/servala/frontend/forms/widgets.py
+++ b/src/servala/frontend/forms/widgets.py
@@ -2,6 +2,7 @@ import json
 
 from django import forms
 from django.core.exceptions import ValidationError
+from django.forms.widgets import NumberInput
 
 
 class DynamicArrayWidget(forms.Widget):
@@ -216,3 +217,21 @@ class DynamicArrayField(forms.JSONField):
                             raise ValidationError(
                                 f"Item {i + 1} must be one of: {', '.join(enum_values)}"
                             )
+
+
+class NumberInputWithAddon(NumberInput):
+    """
+    Widget for number input fields with a suffix add-on (e.g., "Gi", "MB").
+    Renders as a Bootstrap input-group with the suffix displayed as an add-on.
+    """
+
+    template_name = "frontend/forms/number_input_with_addon.html"
+
+    def __init__(self, addon_text="", attrs=None):
+        super().__init__(attrs)
+        self.addon_text = addon_text
+
+    def get_context(self, name, value, attrs):
+        context = super().get_context(name, value, attrs)
+        context["widget"]["addon_text"] = self.addon_text
+        return context
diff --git a/src/servala/frontend/templates/frontend/forms/number_input_with_addon.html b/src/servala/frontend/templates/frontend/forms/number_input_with_addon.html
new file mode 100644
index 0000000..4fe3b54
--- /dev/null
+++ b/src/servala/frontend/templates/frontend/forms/number_input_with_addon.html
@@ -0,0 +1,11 @@
+<div class="input-group">
+    <input type="{{ widget.type }}"
+           name="{{ widget.name }}"
+           {% if widget.value != None %}value="{{ widget.value }}"{% endif %}
+           {% if widget.attrs.id %}id="{{ widget.attrs.id }}"{% endif %}
+           {% for name, value in widget.attrs.items %} {% if value is not False and name != "id" %} {{ name }}{% if value is not True %}="{{ value }}"{% endif %}
+           {% endif %}
+           {% endfor %}
+           class="form-control{% if widget.attrs.class %} {{ widget.attrs.class }}{% endif %}" />
+    <span class="input-group-text">{{ widget.addon_text }}</span>
+</div>
diff --git a/src/tests/test_form_config.py b/src/tests/test_form_config.py
index 7188d61..c93f3fb 100644
--- a/src/tests/test_form_config.py
+++ b/src/tests/test_form_config.py
@@ -10,28 +10,6 @@ from servala.core.forms import ServiceDefinitionAdminForm
 from servala.core.models import ControlPlaneCRD
 
 
-def test_custom_model_form_class_is_none_when_no_form_config():
-    crd = Mock(spec=ControlPlaneCRD)
-    service_def = Mock()
-    service_def.form_config = None
-    crd.service_definition = service_def
-    crd.django_model = Mock()
-
-    if not (
-        crd.django_model
-        and crd.service_definition
-        and crd.service_definition.form_config
-        and crd.service_definition.form_config.get("fieldsets")
-    ):
-        result = None
-    else:
-        result = generate_custom_form_class(
-            crd.service_definition.form_config, crd.django_model
-        )
-
-    assert result is None
-
-
 def test_custom_model_form_class_returns_class_when_form_config_exists():
 
     crd = Mock(spec=ControlPlaneCRD)
@@ -60,18 +38,9 @@ def test_custom_model_form_class_returns_class_when_form_config_exists():
             app_label = "test"
 
     crd.django_model = TestModel
-
-    if not (
-        crd.django_model
-        and crd.service_definition
-        and crd.service_definition.form_config
-        and crd.service_definition.form_config.get("fieldsets")
-    ):
-        result = None
-    else:
-        result = generate_custom_form_class(
-            crd.service_definition.form_config, crd.django_model
-        )
+    result = generate_custom_form_class(
+        crd.service_definition.form_config, crd.django_model
+    )
 
     assert result is not None
     assert hasattr(result, "form_config")
@@ -1084,3 +1053,43 @@ def test_empty_values_dont_override_default_configs():
     assert name_field.max_length == DEFAULT_FIELD_CONFIGS["name"]["max_length"]
 
     assert name_field.required is False  # Was overridden by explicit False
+
+
+def test_number_field_with_addon_text_roundtrip():
+    class TestModel(models.Model):
+        name = models.CharField(max_length=100)
+        disk_size = models.IntegerField()
+
+        class Meta:
+            app_label = "test"
+
+    form_config = {
+        "fieldsets": [
+            {
+                "fields": [
+                    {
+                        "type": "text",
+                        "label": "Name",
+                        "controlplane_field_mapping": "name",
+                        "required": True,
+                    },
+                    {
+                        "type": "number",
+                        "label": "Disk Size",
+                        "controlplane_field_mapping": "disk_size",
+                        "addon_text": "Gi",
+                    },
+                ],
+            }
+        ]
+    }
+
+    form_class = generate_custom_form_class(form_config, TestModel)
+    form = form_class(initial={"name": "test-instance", "disk_size": "25Gi"})
+
+    assert form.initial["disk_size"] == 25
+    form = form_class(data={"name": "test-instance", "disk_size": "25"})
+    form.fields["context"].required = False
+    assert form.is_valid(), f"Form should be valid but has errors: {form.errors}"
+    nested_data = form.get_nested_data()
+    assert nested_data["disk_size"] == "25Gi"