diff --git a/src/openforms/js/components/admin/form_design/RegistrationFields.stories.js b/src/openforms/js/components/admin/form_design/RegistrationFields.stories.js
index 2e092faddb..bdd11f7084 100644
--- a/src/openforms/js/components/admin/form_design/RegistrationFields.stories.js
+++ b/src/openforms/js/components/admin/form_design/RegistrationFields.stories.js
@@ -411,7 +411,7 @@ export default {
               title: 'Relative API endpoint',
               type: 'string',
             },
-            formVariables: {
+            variables: {
               type: 'array',
               title: 'List of form variables',
               items: {
@@ -770,7 +770,7 @@ export const ConfiguredBackends = {
         options: {
           service: 1,
           path: 'example/endpoint',
-          formVariables: [],
+          variables: [],
         },
       },
     ],
@@ -1029,7 +1029,7 @@ export const JSONDump = {
         options: {
           service: 1,
           path: 'example/endpoint',
-          formVariables: [],
+          variables: [],
         },
       },
     ],
diff --git a/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpOptionsForm.js b/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpOptionsForm.js
index a23024e2ef..e27ca5fa5b 100644
--- a/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpOptionsForm.js
+++ b/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpOptionsForm.js
@@ -22,11 +22,11 @@ const JSONDumpOptionsForm = ({name, label, schema, formData, onChange}) => {
   const formContext = useContext(FormContext);
   const formVariables = formContext.formVariables ?? [];
   const staticVariables = formContext.staticVariables ?? [];
-  const allFormVariables = staticVariables.concat(formVariables);
+  const allVariables = staticVariables.concat(formVariables);
 
-  const formVariableOptions = [];
-  for (const formVariable of allFormVariables) {
-    formVariableOptions.push({value: formVariable.key, label: formVariable.name});
+  const variableOptions = [];
+  for (const variable of allVariables) {
+    variableOptions.push({value: variable.key, label: variable.name});
   }
 
   // Create service options
@@ -49,7 +49,7 @@ const JSONDumpOptionsForm = ({name, label, schema, formData, onChange}) => {
       initialFormData={{
         service: null,
         path: '',
-        formVariables: [],
+        variables: [],
         ...formData,
       }}
       onSubmit={values => onChange({formData: values})}
@@ -59,7 +59,7 @@ const JSONDumpOptionsForm = ({name, label, schema, formData, onChange}) => {
         <Fieldset>
           <ServiceSelect options={serviceOptions} />
           <Path />
-          <FormVariablesSelect options={formVariableOptions} />
+          <FormVariablesSelect options={variableOptions} />
         </Fieldset>
       </ValidationErrorsProvider>
     </ModalOptionsConfiguration>
@@ -80,9 +80,7 @@ JSONDumpOptionsForm.propTypes = {
   formData: PropTypes.shape({
     service: PropTypes.number,
     path: PropTypes.string,
-    // TODO-4908: might need to rename this to selectedFormVariables to avoid confusion or even
-    //  naming conflicts
-    formVariables: PropTypes.arrayOf(PropTypes.string),
+    variables: PropTypes.arrayOf(PropTypes.string),
   }),
   onChange: PropTypes.func.isRequired,
 };
diff --git a/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpSummaryHandler.js b/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpSummaryHandler.js
index 4c971e5ce2..0c74f9e4d8 100644
--- a/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpSummaryHandler.js
+++ b/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpSummaryHandler.js
@@ -4,7 +4,7 @@ import React from 'react';
 import {IconNo, IconYes} from 'components/admin/BooleanIcons';
 
 const JSONDumpSummaryHandler = ({variable, backendOptions}) => {
-  const isIncluded = backendOptions.formVariables.includes(variable.key);
+  const isIncluded = backendOptions.variables.includes(variable.key);
 
   return isIncluded ? <IconYes /> : <IconNo />;
 };
@@ -14,7 +14,7 @@ JSONDumpSummaryHandler.propTypes = {
     key: PropTypes.string.isRequired,
   }).isRequired,
   backendOptions: PropTypes.shape({
-    formVariables: PropTypes.arrayOf(PropTypes.string).isRequired,
+    variables: PropTypes.arrayOf(PropTypes.string).isRequired,
   }).isRequired,
 };
 
diff --git a/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpVariableConfigurationEditor.js b/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpVariableConfigurationEditor.js
index 802031ebe3..31bb9b8fea 100644
--- a/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpVariableConfigurationEditor.js
+++ b/src/openforms/js/components/admin/form_design/registrations/json_dump/JSONDumpVariableConfigurationEditor.js
@@ -9,10 +9,10 @@ import {Checkbox} from 'components/admin/forms/Inputs';
 
 const JSONDumpVariableConfigurationEditor = ({variable}) => {
   const {
-    values: {formVariables = []},
+    values: {variables = []},
     setFieldValue,
   } = useFormikContext();
-  const isIncluded = formVariables.includes(variable.key);
+  const isIncluded = variables.includes(variable.key);
 
   return (
     <FormRow>
@@ -34,10 +34,10 @@ const JSONDumpVariableConfigurationEditor = ({variable}) => {
           checked={isIncluded}
           onChange={event => {
             const shouldBeIncluded = event.target.checked;
-            const newFormVariables = shouldBeIncluded
-              ? [...formVariables, variable.key] // add the variable to the array
-              : formVariables.filter(key => key !== variable.key); // remove the variable from the array
-            setFieldValue('formVariables', newFormVariables);
+            const newVariables = shouldBeIncluded
+              ? [...variables, variable.key] // add the variable to the array
+              : variables.filter(key => key !== variable.key); // remove the variable from the array
+            setFieldValue('variables', variables);
           }}
         />
       </Field>
diff --git a/src/openforms/js/components/admin/form_design/registrations/json_dump/fields/FormVariablesSelect.js b/src/openforms/js/components/admin/form_design/registrations/json_dump/fields/FormVariablesSelect.js
index ea3102f5b1..7ac5993b2b 100644
--- a/src/openforms/js/components/admin/form_design/registrations/json_dump/fields/FormVariablesSelect.js
+++ b/src/openforms/js/components/admin/form_design/registrations/json_dump/fields/FormVariablesSelect.js
@@ -8,7 +8,7 @@ import FormRow from 'components/admin/forms/FormRow';
 import ReactSelect from 'components/admin/forms/ReactSelect';
 
 const FormVariablesSelect = ({options}) => {
-  const [fieldProps, , {setValue}] = useField('formVariables');
+  const [fieldProps, , {setValue}] = useField('variables');
 
   const values = [];
   if (fieldProps.value && fieldProps.value.length) {
@@ -23,24 +23,24 @@ const FormVariablesSelect = ({options}) => {
   return (
     <FormRow>
       <Field
-        name="formVariables"
+        name="variables"
         label={
           <FormattedMessage
-            description="JSON registration options 'formVariables' label"
-            defaultMessage="Form variables"
+            description="JSON registration options 'variables' label"
+            defaultMessage="Variables"
           />
         }
         helpText={
           <FormattedMessage
-            description="JSON registration options 'formVariables' helpText"
-            defaultMessage="Which form variables to include in the data to be sent"
+            description="JSON registration options 'variables' helpText"
+            defaultMessage="Which variables to include in the data to be sent"
           />
         }
         required
         noManageChildProps
       >
         <ReactSelect
-          name="formVariables"
+          name="variables"
           options={options}
           isMulti
           required
diff --git a/src/openforms/js/components/admin/form_design/variables/VariablesEditor.stories.js b/src/openforms/js/components/admin/form_design/variables/VariablesEditor.stories.js
index 26c4ff6b04..ff3f45280a 100644
--- a/src/openforms/js/components/admin/form_design/variables/VariablesEditor.stories.js
+++ b/src/openforms/js/components/admin/form_design/variables/VariablesEditor.stories.js
@@ -664,7 +664,7 @@ export const WithJSONDumpRegistrationBackend = {
         options: {
           service: 2,
           path: 'test',
-          formVariables: ['aSingleFile', 'now'],
+          variables: ['aSingleFile', 'now'],
         },
       },
     ],
diff --git a/src/openforms/registrations/contrib/json_dump/config.py b/src/openforms/registrations/contrib/json_dump/config.py
index 0b30938e8c..724ec4e19b 100644
--- a/src/openforms/registrations/contrib/json_dump/config.py
+++ b/src/openforms/registrations/contrib/json_dump/config.py
@@ -40,12 +40,10 @@ class JSONDumpOptionsSerializer(JsonSchemaSerializerMixin, serializers.Serialize
         default="",
         validators=[validate_path],
     )
-    form_variables = serializers.ListField(
+    variables = serializers.ListField(
         child=FormioVariableKeyField(),
-        label=_("Form variable key list"),
-        help_text=_(
-            "A list of form variables (can also include static variables) to use."
-        ),
+        label=_("Variable key list"),
+        help_text=_("A list of variables to use."),
         required=True,
         min_length=1,
     )
@@ -61,4 +59,4 @@ class JSONDumpOptions(TypedDict):
 
     service: Service
     path: str
-    form_variables: list[str]
+    variables: list[str]
diff --git a/src/openforms/registrations/contrib/json_dump/plugin.py b/src/openforms/registrations/contrib/json_dump/plugin.py
index 18020edf08..1117cf13a3 100644
--- a/src/openforms/registrations/contrib/json_dump/plugin.py
+++ b/src/openforms/registrations/contrib/json_dump/plugin.py
@@ -38,7 +38,7 @@ def register_submission(
         values = {
             key: value
             for key, value in all_values.items()
-            if key in options["form_variables"]
+            if key in options["variables"]
         }
 
         # Process attachments
diff --git a/src/openforms/registrations/contrib/json_dump/tests/test_backend.py b/src/openforms/registrations/contrib/json_dump/tests/test_backend.py
index 45777a314d..f2dbd51a3e 100644
--- a/src/openforms/registrations/contrib/json_dump/tests/test_backend.py
+++ b/src/openforms/registrations/contrib/json_dump/tests/test_backend.py
@@ -58,13 +58,13 @@ def test_submission_with_json_dump_backend(self):
         json_form_options = dict(
             service=(ServiceFactory(api_root="http://localhost:80/")),
             path="json_plugin",
-            form_variables=["firstName", "file", "auth_bsn"],
+            variables=["firstName", "file", "auth_bsn"],
         )
         json_plugin = JSONDumpRegistration("json_registration_plugin")
         set_submission_reference(submission)
 
         expected_response = {
-            # Note that `lastName` is not included here as it wasn't specified in the form_variables
+            # Note that `lastName` is not included here as it wasn't specified in the variables
             "data": {
                 "values": {
                     "auth_bsn": "123456789",
@@ -110,7 +110,7 @@ def test_exception_raised_when_service_returns_unexpected_status_code(self):
         json_form_options = dict(
             service=(ServiceFactory(api_root="http://localhost:80/")),
             path="fake_endpoint",
-            form_variables=["firstName", "auth_bsn"],
+            variables=["firstName", "auth_bsn"],
         )
         json_plugin = JSONDumpRegistration("json_registration_plugin")
         set_submission_reference(submission)
@@ -163,7 +163,7 @@ def test_multiple_file_uploads(self):
         json_form_options = dict(
             service=(ServiceFactory(api_root="http://localhost:80/")),
             path="json_plugin",
-            form_variables=["file"],
+            variables=["file"],
         )
         json_plugin = JSONDumpRegistration("json_registration_plugin")
         set_submission_reference(submission)
@@ -197,7 +197,7 @@ def test_path_traversal_attack(self):
         json_form_options = dict(
             service=(ServiceFactory(api_root="http://localhost:80/")),
             path="..",
-            form_variables=["firstName", "file", "auth_bsn"],
+            variables=["firstName", "file", "auth_bsn"],
         )
         json_plugin = JSONDumpRegistration("json_registration_plugin")
         set_submission_reference(submission)