diff --git a/common/constants/data_sources.ts b/common/constants/data_sources.ts
index c396951a8a..5423839914 100644
--- a/common/constants/data_sources.ts
+++ b/common/constants/data_sources.ts
@@ -35,7 +35,7 @@ export const ACCELERATION_TIME_INTERVAL = [
 ];
 
 export const ACCELERATION_ADD_FIELDS_TEXT = '(add fields here)';
-export const ACCELERATION_INDEX_NAME_REGEX = /^[a-z][a-z_]*$/;
+export const ACCELERATION_INDEX_NAME_REGEX = /^[a-z0-9_]+$/;
 export const ACCELERATION_S3_URL_REGEX = /^(s3|s3a):\/\/[a-zA-Z0-9.\-]+/;
 export const SPARK_HIVE_TABLE_REGEX = /Provider:\s*hive/;
 export const TIMESTAMP_DATATYPE = 'timestamp';
@@ -60,7 +60,7 @@ export const ACCELERATION_INDEX_NAME_INFO = `All OpenSearch acceleration indices
 - 'Materialized View' indices also enable users to define their index name, but they do not have a suffix.
   - An example of a 'Materialized View' index name might look like: \`flint_mydatasource_mydb_mytable_myindexname\`.
 ##### Note:
-- All user given index names must be in lowercase letters. Index name cannot begin with underscores. Spaces, commas, and characters -, :, ", *, +, /, \, |, ?, #, >, or < are not allowed.  
+- All user given index names must be in lowercase letters, numbers and underscore. Spaces, commas, and characters -, :, ", *, +, /, \, |, ?, #, >, or < are not allowed.  
   `;
 
 export const SKIPPING_INDEX_ACCELERATION_METHODS = [
diff --git a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/__tests__/__snapshots__/create_acceleration.test.tsx.snap b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/__tests__/__snapshots__/create_acceleration.test.tsx.snap
index a7e3d0fabd..5e0c5a7754 100644
--- a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/__tests__/__snapshots__/create_acceleration.test.tsx.snap
+++ b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/__tests__/__snapshots__/create_acceleration.test.tsx.snap
@@ -435,7 +435,7 @@ Array [
                           class="euiFormLabel euiFormRow__label"
                           for="random_html_id"
                         >
-                          Index type
+                          Acceleration type
                         </label>
                          
                         <div
@@ -538,7 +538,7 @@ Array [
                           class="euiFormHelpText euiFormRow__text"
                           id="random_html_id-help-0"
                         >
-                          Select the type of index you want to create. Each index type has benefits and costs.
+                          Select the type of acceleration according to your use case.
                         </div>
                       </div>
                     </div>
@@ -1031,7 +1031,7 @@ Array [
                                   class="euiFormHelpText euiFormRow__text"
                                   id="random_html_id-help-0"
                                 >
-                                  Must be in lowercase letters. Cannot begin with underscores. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
+                                  Must be in lowercase letters, numbers and underscore. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
                                 </div>
                               </div>
                             </div>
@@ -1834,7 +1834,7 @@ Array [
                             className="euiFormLabel euiFormRow__label"
                             htmlFor="random_html_id"
                           >
-                            Index type
+                            Acceleration type
                           </label>
                            
                           <div
@@ -1950,7 +1950,7 @@ Array [
                             className="euiFormHelpText euiFormRow__text"
                             id="random_html_id-help-0"
                           >
-                            Select the type of index you want to create. Each index type has benefits and costs.
+                            Select the type of acceleration according to your use case.
                           </div>
                         </div>
                       </div>,
@@ -2528,7 +2528,7 @@ Array [
                                     className="euiFormHelpText euiFormRow__text"
                                     id="random_html_id-help-0"
                                   >
-                                    Must be in lowercase letters. Cannot begin with underscores. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
+                                    Must be in lowercase letters, numbers and underscore. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
                                   </div>
                                 </div>
                               </div>,
diff --git a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/__tests__/utils.test.tsx b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/__tests__/utils.test.tsx
index f60b782331..c4dedaffd1 100644
--- a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/__tests__/utils.test.tsx
+++ b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/__tests__/utils.test.tsx
@@ -132,7 +132,7 @@ describe('validateRefreshInterval', () => {
 
 describe('validateIndexName', () => {
   it('should return an array with an error message when the index name is invalid', () => {
-    expect(validateIndexName('_invalid')).toEqual(['Enter a valid index name']);
+    expect(validateIndexName('Iinvalid')).toEqual(['Enter a valid index name']);
     expect(validateIndexName('-invalid')).toEqual(['Enter a valid index name']);
     expect(validateIndexName('InVal1d')).toEqual(['Enter a valid index name']);
     expect(validateIndexName('invalid_with spaces')).toEqual(['Enter a valid index name']);
@@ -147,9 +147,13 @@ describe('validateIndexName', () => {
 
   it('should use the ACCELERATION_INDEX_NAME_REGEX pattern to validate the index name', () => {
     expect(ACCELERATION_INDEX_NAME_REGEX.test('valid_name')).toBe(true);
+    expect(ACCELERATION_INDEX_NAME_REGEX.test('_valid_name')).toBe(true);
+    expect(ACCELERATION_INDEX_NAME_REGEX.test('23valid_name')).toBe(true);
+    expect(ACCELERATION_INDEX_NAME_REGEX.test('___1__')).toBe(true);
+    expect(ACCELERATION_INDEX_NAME_REGEX.test('23')).toBe(true);
     expect(ACCELERATION_INDEX_NAME_REGEX.test('invalid name')).toBe(false);
     expect(ACCELERATION_INDEX_NAME_REGEX.test('-invalid')).toBe(false);
-    expect(ACCELERATION_INDEX_NAME_REGEX.test('_invalid')).toBe(false);
+    expect(ACCELERATION_INDEX_NAME_REGEX.test('_invalid')).toBe(true);
     expect(ACCELERATION_INDEX_NAME_REGEX.test('invalid.')).toBe(false);
     expect(ACCELERATION_INDEX_NAME_REGEX.test('invalid<')).toBe(false);
     expect(ACCELERATION_INDEX_NAME_REGEX.test('invalid*')).toBe(false);
diff --git a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/create_acceleration.tsx b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/create_acceleration.tsx
index 2f5895dba8..c6f3ddbb40 100644
--- a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/create_acceleration.tsx
+++ b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/create_acceleration.tsx
@@ -229,6 +229,7 @@ export const CreateAcceleration = ({
             <PreviewSQLDefinition
               accelerationFormData={accelerationFormData}
               setAccelerationFormData={setAccelerationFormData}
+              resetFlyout={resetFlyout}
             />
           </EuiForm>
         </EuiFlyoutBody>
diff --git a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/utils.tsx b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/utils.tsx
index 55d72aebf1..297397315c 100644
--- a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/utils.tsx
+++ b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/create/utils.tsx
@@ -64,7 +64,7 @@ export const validateWatermarkDelay = (
 };
 
 export const validateIndexName = (value: string) => {
-  // Check if the value does not begin with underscores or hyphens and all characters are lower case
+  // Check if the value contains lower case letters, numbers and underscore
   return !ACCELERATION_INDEX_NAME_REGEX.test(value) ? ['Enter a valid index name'] : [];
 };
 
diff --git a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/define_index_options.test.tsx.snap b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/define_index_options.test.tsx.snap
index dce481c0a5..ad9200b27a 100644
--- a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/define_index_options.test.tsx.snap
+++ b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/define_index_options.test.tsx.snap
@@ -96,7 +96,7 @@ Array [
         className="euiFormHelpText euiFormRow__text"
         id="random_html_id-help-0"
       >
-        Must be in lowercase letters. Cannot begin with underscores. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
+        Must be in lowercase letters, numbers and underscore. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
       </div>
     </div>
   </div>,
@@ -200,7 +200,7 @@ Array [
         className="euiFormHelpText euiFormRow__text"
         id="random_html_id-help-0"
       >
-        Must be in lowercase letters. Cannot begin with underscores. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
+        Must be in lowercase letters, numbers and underscore. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
       </div>
     </div>
   </div>,
@@ -298,7 +298,7 @@ Array [
         className="euiFormHelpText euiFormRow__text"
         id="random_html_id-help-0"
       >
-        Must be in lowercase letters. Cannot begin with underscores. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
+        Must be in lowercase letters, numbers and underscore. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
       </div>
     </div>
   </div>,
diff --git a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/index_advanced_settings.test.tsx.snap b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/index_advanced_settings.test.tsx.snap
index 22848cba53..40151f9b28 100644
--- a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/index_advanced_settings.test.tsx.snap
+++ b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/index_advanced_settings.test.tsx.snap
@@ -154,7 +154,7 @@ exports[`Advanced Index settings acceleration components renders acceleration in
                 className="euiFormHelpText euiFormRow__text"
                 id="random_html_id-help-0"
               >
-                Must be in lowercase letters. Cannot begin with underscores. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
+                Must be in lowercase letters, numbers and underscore. Spaces, commas, and characters -, :, ", *, +, /, \\, |, ?, #, &gt;, or &lt; are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.
               </div>
             </div>
           </div>,
diff --git a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/index_type_selector.test.tsx.snap b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/index_type_selector.test.tsx.snap
index 86c904d9bb..0a4b47c084 100644
--- a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/index_type_selector.test.tsx.snap
+++ b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/__tests__/__snapshots__/index_type_selector.test.tsx.snap
@@ -24,7 +24,7 @@ Array [
         className="euiFormLabel euiFormRow__label"
         htmlFor="random_html_id"
       >
-        Index type
+        Acceleration type
       </label>
        
       <div
@@ -140,7 +140,7 @@ Array [
         className="euiFormHelpText euiFormRow__text"
         id="random_html_id-help-0"
       >
-        Select the type of index you want to create. Each index type has benefits and costs.
+        Select the type of acceleration according to your use case.
       </div>
     </div>
   </div>,
@@ -171,7 +171,7 @@ Array [
         className="euiFormLabel euiFormRow__label"
         htmlFor="random_html_id"
       >
-        Index type
+        Acceleration type
       </label>
        
       <div
@@ -287,7 +287,7 @@ Array [
         className="euiFormHelpText euiFormRow__text"
         id="random_html_id-help-0"
       >
-        Select the type of index you want to create. Each index type has benefits and costs.
+        Select the type of acceleration according to your use case.
       </div>
     </div>
   </div>,
diff --git a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/define_index_options.tsx b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/define_index_options.tsx
index 51e2221d48..63f829977d 100644
--- a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/define_index_options.tsx
+++ b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/define_index_options.tsx
@@ -91,7 +91,7 @@ export const DefineIndexOptions = ({
     <>
       <EuiFormRow
         label="Index name"
-        helpText='Must be in lowercase letters. Cannot begin with underscores. Spaces, commas, and characters -, :, ", *, +, /, \, |, ?, #, >, or < are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.'
+        helpText='Must be in lowercase letters, numbers and underscore. Spaces, commas, and characters -, :, ", *, +, /, \, |, ?, #, >, or < are not allowed. Prefix and suffix are added to the name of generated OpenSearch index.'
         isInvalid={hasError(accelerationFormData.formErrors, 'indexNameError')}
         error={accelerationFormData.formErrors.indexNameError}
         labelAppend={
diff --git a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/index_setting_options.tsx b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/index_setting_options.tsx
index ddf93d9d66..36164e3315 100644
--- a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/index_setting_options.tsx
+++ b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/index_setting_options.tsx
@@ -101,10 +101,13 @@ export const IndexSettingOptions = ({
   const [checkpoint, setCheckpoint] = useState('');
 
   const onChangeRefreshType = (optionId: AccelerationRefreshType) => {
-    setAccelerationFormData({
-      ...accelerationFormData,
-      refreshType: optionId,
-    });
+    setAccelerationFormData(
+      producer((accData) => {
+        accData.refreshType = optionId;
+        accData.formErrors.checkpointLocationError = [];
+        accData.formErrors.refreshIntervalError = [];
+      })
+    );
     setRefreshTypeSelected(optionId);
   };
 
diff --git a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/index_type_selector.tsx b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/index_type_selector.tsx
index 64fb19e573..c169620588 100644
--- a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/index_type_selector.tsx
+++ b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/index_type_selector.tsx
@@ -98,8 +98,8 @@ export const IndexTypeSelector = ({
       </EuiText>
       <EuiSpacer size="s" />
       <EuiFormRow
-        label="Index type"
-        helpText="Select the type of index you want to create. Each index type has benefits and costs."
+        label="Acceleration type"
+        helpText="Select the type of acceleration according to your use case."
         labelAppend={
           <EuiText size="xs">
             <EuiLink href={ACC_INDEX_TYPE_DOCUMENTATION_URL} target="_blank">
diff --git a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/preview_sql_defintion.tsx b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/preview_sql_defintion.tsx
index b0c61b7560..9ce5c8e42b 100644
--- a/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/preview_sql_defintion.tsx
+++ b/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/preview_sql_defintion.tsx
@@ -26,11 +26,13 @@ import { accelerationQueryBuilder } from '../visual_editors/query_builder';
 interface PreviewSQLDefinitionProps {
   accelerationFormData: CreateAccelerationForm;
   setAccelerationFormData: React.Dispatch<React.SetStateAction<CreateAccelerationForm>>;
+  resetFlyout: () => void;
 }
 
 export const PreviewSQLDefinition = ({
   accelerationFormData,
   setAccelerationFormData,
+  resetFlyout,
 }: PreviewSQLDefinitionProps) => {
   const { setToast } = useToast();
   const [isPreviewStale, setIsPreviewStale] = useState(false);
@@ -96,12 +98,13 @@ export const PreviewSQLDefinition = ({
           queryToRun: accelerationQueryBuilder(accelerationFormData),
         },
       });
+      resetFlyout();
     }
   };
 
   const queryWorkbenchButton = sqlWorkbenchPLuginExists ? (
-    <EuiButton iconType="popout" iconSide="right" onClick={openInWorkbench}>
-      Open in Query Workbench
+    <EuiButton iconSide="right" onClick={openInWorkbench}>
+      Continue in Query Workbench
     </EuiButton>
   ) : (
     <></>