diff --git a/config/schema/upei_roblib_ill.schema.yml b/config/schema/upei_roblib_ill.schema.yml
index ab0fc4c..a7251a8 100644
--- a/config/schema/upei_roblib_ill.schema.yml
+++ b/config/schema/upei_roblib_ill.schema.yml
@@ -14,18 +14,9 @@ upei_roblib_ill.settings:
     ill_contact_phone:
       type: string
       label: 'Contact Phone Number'
-    rapid_ill_username:
+    sharepoint_webhook_url:
       type: string
-      label: 'RapidILL Username'
-    rapid_ill_password:
-      type: string
-      label: 'RapidILL Password'
-    rapid_ill_code:
-      type: string
-      label: 'RapidILL Rapid Code'
-    rapid_ill_branch_name:
-      type: string
-      label: 'RapidILL Branch Name'
+      label: 'Power Automate Webhook URL'
     evergreen_api_url:
       type: string
       label: 'Evergreen API URL'
diff --git a/includes/db.inc b/includes/db.inc
index ae9bf69..ce783b4 100644
--- a/includes/db.inc
+++ b/includes/db.inc
@@ -5,25 +5,23 @@
  */
 
 
-use RapidIll\InsertRequest;
-
 /**
- * Log an ILL request
+ * Log an ILL request.
  *
- * @param \RapidIll\InsertRequest $request
- *   The request sent to RapidILL as an InsertRequest object.
+ * @param array $payload
+ *   The request payload as an associative array (SharePoint webhook format).
  * @param array|string $response
- *   The response from RapidILL or an error message.
+ *   The response from the ILL service or an error message.
  */
-function upei_roblib_ill_log_request(InsertRequest $request, $response) {
-  $soap_data = $request->toSoapArray();
+function upei_roblib_ill_log_request(array $payload, $response) {
   $time_submitted = time();
-  $relais_message = is_array($response) ? (isset($response['ConfirmMessage']) ? $response['ConfirmMessage'] : ($response['Problem']['Message'] ?? '')) : (string) $response;
+  $relais_message = is_array($response) ? ($response['ConfirmMessage'] ?? ($response['Problem']['Message'] ?? '')) : (string) $response;
 
+  // Parse patron name into first/last.
   $patron_firstname = '';
   $patron_lastname = '';
-  if (!empty($soap_data['PatronName'])) {
-    $parts = explode(' ', $soap_data['PatronName'], 2);
+  if (!empty($payload['patronName'])) {
+    $parts = explode(' ', $payload['patronName'], 2);
     $patron_firstname = trim($parts[0] ?? '');
     $patron_lastname = trim($parts[1] ?? '');
   }
@@ -32,25 +30,25 @@ function upei_roblib_ill_log_request(InsertRequest $request, $response) {
   try {
     $connection->insert('upei_roblib_ill_request')
       ->fields([
-        'patron_id' => $soap_data['PatronId'] ?? '',
+        'patron_id' => $payload['patronBarcode'] ?? '',
         'patron_firstname' => $patron_firstname,
         'patron_lastname' => $patron_lastname,
-        'patron_type' => '',
-        'patron_department' => $soap_data['PatronDepartment'] ?? '',
-        'patron_email' => $soap_data['PatronEmail'] ?? '',
-        'notes' => $soap_data['PatronNotes'] ?? '',
-        'genre' => $soap_data['RapidRequestType'] ?? '',
-        'doi' => '',
-        'author' => $soap_data['ArticleAuthor'] ?? '',
-        'citation_date' => $soap_data['PatronJournalYear'] ?? '',
-        'title' => $soap_data['PatronJournalTitle'] ?? '',
-        'atitle' => $soap_data['ArticleTitle'] ?? '',
-        'issn' => $soap_data['SuggestedIssns']['string'][0] ?? '',
-        'isbn' => $soap_data['SuggestedIsbns']['string'][0] ?? '',
-        'article_author' => $soap_data['ArticleAuthor'] ?? '',
-        'volume' => $soap_data['JournalVol'] ?? '',
-        'issue' => $soap_data['JournalIssue'] ?? '',
-        'pages_requested' => $soap_data['ArticlePages'] ?? '',
+        'patron_type' => $payload['patronType'] ?? '',
+        'patron_department' => $payload['patronDepartment'] ?? '',
+        'patron_email' => $payload['patronEmail'] ?? '',
+        'notes' => $payload['notes'] ?? '',
+        'genre' => $payload['format'] ?? '',
+        'doi' => $payload['doi_isbn'] ?? '',
+        'author' => $payload['author'] ?? '',
+        'citation_date' => $payload['year'] ?? '',
+        'title' => $payload['title'] ?? '',
+        'atitle' => $payload['articleTitle'] ?? '',
+        'issn' => $payload['issn'] ?? '',
+        'isbn' => $payload['isbn'] ?? '',
+        'article_author' => $payload['author'] ?? '',
+        'volume' => $payload['volume'] ?? '',
+        'issue' => $payload['issue'] ?? '',
+        'pages_requested' => $payload['pagesRequested'] ?? '',
         'time_submitted' => $time_submitted,
         'relais_request_id' => is_array($response) && isset($response['RequestNumber']) ? $response['RequestNumber'] : '-1',
         'relais_message' => substr($relais_message, 0, 254),
diff --git a/includes/sharepoint.inc b/includes/sharepoint.inc
new file mode 100644
index 0000000..c45a5be
--- /dev/null
+++ b/includes/sharepoint.inc
@@ -0,0 +1,206 @@
+<?php
+
+/**
+ * @file
+ * Contains the SharePointRequestHandler class for submitting ILL requests
+ * to a SharePoint list via a Power Automate webhook.
+ */
+
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Handles building and submitting ILL requests to SharePoint via Power Automate.
+ *
+ * Usage (from the form submit handler):
+ * @code
+ *   \Drupal::moduleHandler()->loadInclude('upei_roblib_ill', 'inc', 'includes/sharepoint');
+ *   $handler = new SharePointRequestHandler();
+ *   $payload = $handler->buildPayload($form_state);
+ *   $response = $handler->submitRequest($payload);
+ * @endcode
+ */
+class SharePointRequestHandler
+{
+
+  /**
+   * Drupal config object for upei_roblib_ill.settings.
+   *
+   * @var \Drupal\Core\Config\ImmutableConfig
+   */
+  protected $config;
+
+  /**
+   * Constructs a new SharePointRequestHandler.
+   */
+  public function __construct()
+  {
+    $this->config = \Drupal::config('upei_roblib_ill.settings');
+  }
+
+  /**
+   * Builds the webhook payload from the Drupal form state.
+   *
+   * Reads bibliographic data from form storage (step 1) and patron data
+   * from the current form values (step 2).
+   *
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current form state containing both steps of the ILL form.
+   *
+   * @return array
+   *   An associative array matching the Power Automate webhook payload schema.
+   */
+  public function buildPayload(FormStateInterface $form_state): array
+  {
+    $storage = $form_state->getStorage();
+    $biblio = $storage['request'] ?? [];
+    $patron = $form_state->getValues();
+
+    $genre = $biblio['Genre'] ?? 'article';
+
+    // Determine the author: use ArticleAuthor for articles/chapters, Author for books.
+    $author = '';
+    if ($genre !== 'book' && !empty($biblio['ArticleAuthor'])) {
+      $author = $biblio['ArticleAuthor'];
+    }
+    elseif (!empty($biblio['Author'])) {
+      $author = $biblio['Author'];
+    }
+
+    // Combine DOI and ISBN into a single field.
+    $doi_isbn_parts = [];
+    if (!empty($biblio['doi'])) {
+      $doi_isbn_parts[] = $biblio['doi'];
+    }
+    if (!empty($biblio['ISBN'])) {
+      $doi_isbn_parts[] = $biblio['ISBN'];
+    }
+    if (!empty($biblio['ISSN'])) {
+      $doi_isbn_parts[] = $biblio['ISSN'];
+    }
+    $doi_isbn = implode('; ', $doi_isbn_parts);
+
+    // Build patron full name.
+    $first_name = $patron['FirstName'] ?? '';
+    $surname = $patron['Surname'] ?? '';
+    $patron_name = trim("$first_name $surname");
+
+    // Build notes — pack all extra info that doesn't have its own schema field.
+    $notes_parts = [];
+    if (!empty($genre)) {
+      $notes_parts[] = 'Format: ' . $genre;
+    }
+    if (!empty($biblio['ArticleTitle'])) {
+      $notes_parts[] = 'Article/Chapter: ' . $biblio['ArticleTitle'];
+    }
+    if (!empty($biblio['Date'])) {
+      $notes_parts[] = 'Year: ' . $biblio['Date'];
+    }
+    if (!empty($biblio['Volume'])) {
+      $notes_parts[] = 'Vol: ' . $biblio['Volume'];
+    }
+    if (!empty($biblio['Issue'])) {
+      $notes_parts[] = 'Issue: ' . $biblio['Issue'];
+    }
+    if (!empty($biblio['PagesRequested'])) {
+      $notes_parts[] = 'Pages: ' . $biblio['PagesRequested'];
+    }
+    if (!empty($patron['patron_type'])) {
+      $notes_parts[] = 'Patron Type: ' . $patron['patron_type'];
+    }
+    if (!empty($patron['campus_id'])) {
+      $notes_parts[] = 'Campus ID: ' . $patron['campus_id'];
+    }
+    if (!empty($patron['Department'])) {
+      $notes_parts[] = 'Dept: ' . $patron['Department'];
+    }
+    if (!empty($patron['notes'])) {
+      $notes_parts[] = $patron['notes'];
+    }
+
+    // All values MUST be strings — Power Automate rejects the request
+    // if any value type does not match the trigger's JSON schema.
+    return [
+      'title' => (string)($biblio['Title'] ?? ''),
+      'author' => (string)$author,
+      'doi_isbn' => (string)$doi_isbn,
+      'callNumber' => (string)($patron['campus_id'] ?? ''),
+      'year' => '2023',
+      'instName' => (string)$patron_name,
+      'instEmail' => (string)($patron['DeliveryAddress'] ?? ''),
+      'shippingAddr' => (string)($patron['Department'] ?? ''),
+      'notes' => (string)implode(' | ', $notes_parts),
+      'submittedAt' => (string)gmdate('Y-m-d\TH:i:s') . '.000Z',
+    ];
+  }
+
+  /**
+   * Submits the payload to the configured Power Automate webhook.
+   *
+   * @param array $payload
+   *   The payload array as built by buildPayload().
+   *
+   * @return array
+   *   An associative array with at least a 'ConfirmMessage' key, and
+   *   optionally a 'RequestNumber' key on success.
+   */
+  public function submitRequest(array $payload): array
+  {
+    \Drupal::moduleHandler()->loadInclude('upei_roblib_ill', 'inc', 'includes/db');
+
+    $webhook_url = $this->config->get('sharepoint_webhook_url');
+    if (empty($webhook_url)) {
+      \Drupal::logger('upei_roblib_ill')->error(
+        'SharePoint webhook URL is not configured. Please set it in the ILL settings.'
+      );
+      $error_response = [
+        'ConfirmMessage' => 'SharePoint integration is not configured. Please contact the library.',
+      ];
+      upei_roblib_ill_log_request($payload, $error_response);
+      return $error_response;
+    }
+
+    // Log the outgoing payload for debugging.
+    \Drupal::logger('upei_roblib_ill')->notice(
+      'Submitting ILL request to SharePoint webhook. Payload: @payload',
+    ['@payload' => json_encode($payload)]
+    );
+
+    try {
+      // Use 'json' option which handles JSON encoding and Content-Type automatically.
+      $response = \Drupal::httpClient()->post($webhook_url, [
+        'json' => $payload,
+        'timeout' => 30,
+      ]);
+
+      $status_code = $response->getStatusCode();
+      $body = (string)$response->getBody();
+      $response_data = json_decode($body, TRUE) ?: [];
+
+      if ($status_code >= 200 && $status_code < 300) {
+        $result = [
+          'RequestNumber' => $response_data['requestId'] ?? date('YmdHis'),
+          'ConfirmMessage' => 'Your Interlibrary Loan request has been successfully submitted.',
+        ];
+      }
+      else {
+        $message = $response_data['error'] ?? 'Unexpected response from SharePoint (HTTP ' . $status_code . ').';
+        $result = [
+          'ConfirmMessage' => 'SharePoint could not process your request: ' . $message,
+        ];
+      }
+    }
+    catch (\Exception $e) {
+      \Drupal::logger('upei_roblib_ill')->error(
+        'SharePoint webhook request failed: @message',
+      ['@message' => $e->getMessage()]
+      );
+      $result = [
+        'ConfirmMessage' => 'Error communicating with SharePoint: ' . $e->getMessage(),
+      ];
+    }
+
+    upei_roblib_ill_log_request($payload, $result);
+    return $result;
+  }
+
+}
\ No newline at end of file
diff --git a/src/Form/RoblibIllLoanForm.php b/src/Form/RoblibIllLoanForm.php
index 81a493a..f499047 100644
--- a/src/Form/RoblibIllLoanForm.php
+++ b/src/Form/RoblibIllLoanForm.php
@@ -50,18 +50,31 @@ class RoblibIllLoanForm extends FormBase
 
       $campus_id = $this->ill_form_message_id($values['campus_id']);
 
-      \Drupal::moduleHandler()->loadInclude('upei_roblib_ill', 'inc', 'includes/rapidill');
-      $handler = new \RapidIllRequestHandler();
-      $insert_request = $handler->buildInsertRequest($form_state);
-      $form_state->set('insert_request', $insert_request);
+      // Build the SharePoint payload for logging and later submission.
+      \Drupal::moduleHandler()->loadInclude('upei_roblib_ill', 'inc', 'includes/sharepoint');
+      $handler = new \SharePointRequestHandler();
+      $payload = $handler->buildPayload($form_state);
+      // Add extra fields for DB logging that aren't in the webhook payload.
+      $payload['patronType'] = $values['patron_type'] ?? '';
+      $payload['patronDepartment'] = $values['Department'] ?? '';
+      // Store individual biblio fields for DB logging.
+      $storage = $form_state->getStorage();
+      $biblio = $storage['request'] ?? [];
+      $payload['articleTitle'] = $biblio['ArticleTitle'] ?? '';
+      $payload['issn'] = $biblio['ISSN'] ?? '';
+      $payload['isbn'] = $biblio['ISBN'] ?? '';
+      $payload['volume'] = $biblio['Volume'] ?? '';
+      $payload['issue'] = $biblio['Issue'] ?? '';
+      $payload['pagesRequested'] = $biblio['PagesRequested'] ?? '';
+      $form_state->set('sharepoint_payload', $payload);
 
       $auth = upei_roblib_ill_authenticate($campus_id, $values['Surname']);
       if (!$auth) {
         $err = 'UserID or Surname do not match or not found.';
         $form_state->setErrorByName('Surname', $err);
-        // Log invalid requests, we need to build the full array here to log it, even though we won't send it yet as auth has failed.
+        // Log invalid requests.
         \Drupal::moduleHandler()->loadInclude('upei_roblib_ill', 'inc', 'includes/db');
-        upei_roblib_ill_log_request($insert_request, $err);
+        upei_roblib_ill_log_request($payload, $err);
       }
 
       $trigger = $form_state->getTriggeringElement();
@@ -121,14 +134,14 @@ class RoblibIllLoanForm extends FormBase
       $form_state->setRebuild(TRUE);
       return;
     }
-    //process the form
-    \Drupal::moduleHandler()->loadInclude('upei_roblib_ill', 'inc', 'includes/rapidill');
-    $handler = new \RapidIllRequestHandler();
-    $insert_request = $form_state->get('insert_request');
-    if (!$insert_request) {
-      $insert_request = $handler->buildInsertRequest($form_state);
+    // Submit the request to SharePoint via the Power Automate webhook.
+    \Drupal::moduleHandler()->loadInclude('upei_roblib_ill', 'inc', 'includes/sharepoint');
+    $handler = new \SharePointRequestHandler();
+    $payload = $form_state->get('sharepoint_payload');
+    if (!$payload) {
+      $payload = $handler->buildPayload($form_state);
     }
-    $response = $handler->submitRequest($insert_request);
+    $response = $handler->submitRequest($payload);
     $error = isset($response['RequestNumber']) ? 'FALSE' : 'TRUE';
     $parameters = [
       'message' => $response['ConfirmMessage'],
@@ -362,8 +375,6 @@ class RoblibIllLoanForm extends FormBase
   /**
    * The patron portion of the ILL form.
    *
-   * The campus_id and email portion are also used in a request for an Relais aid.
-   *
    * @param array $form
    *   An array representing a Drupal form.
    * @param array $form_state
diff --git a/src/Form/RoblibIllSettingsForm.php b/src/Form/RoblibIllSettingsForm.php
index a3d8524..4f95920 100644
--- a/src/Form/RoblibIllSettingsForm.php
+++ b/src/Form/RoblibIllSettingsForm.php
@@ -35,7 +35,7 @@ class RoblibIllSettingsForm extends FormBase
       '#type' => 'textfield',
       '#size' => 200,
       '#title' => t('Your ILL Library Symbol'),
-      '#description' => t('Your Relais Library Symbol'),
+      '#description' => t('Your Library Symbol'),
       '#default_value' => $config->get('ill_library_symbol'),
     ];
 
@@ -93,38 +93,20 @@ class RoblibIllSettingsForm extends FormBase
       '#size' => 200,
     ];
 
-    // RapidILL settings.
-    $form['rapid_ill_fieldset'] = [
+    // SharePoint Settings.
+    $form['sharepoint_fieldset'] = [
       '#type' => 'fieldset',
-      '#title' => t('RapidILL Settings'),
-      '#description' => t('Credentials and configuration for submitting requests via RapidILL.'),
+      '#title' => t('SharePoint Settings'),
+      '#description' => t('Configuration for submitting ILL requests to SharePoint via Power Automate.'),
     ];
-    $form['rapid_ill_fieldset']['rapid_ill_username'] = [
+    $form['sharepoint_fieldset']['sharepoint_webhook_url'] = [
       '#type' => 'textfield',
-      '#title' => t('RapidILL Username'),
-      '#description' => t('Your RapidILL API username.'),
-      '#default_value' => $config->get('rapid_ill_username'),
-      '#size' => 200,
-    ];
-    $form['rapid_ill_fieldset']['rapid_ill_password'] = [
-      '#type' => 'password',
-      '#title' => t('RapidILL Password'),
-      '#description' => t('Your RapidILL API password. Leave blank to keep the existing value.'),
-      '#size' => 200,
-    ];
-    $form['rapid_ill_fieldset']['rapid_ill_code'] = [
-      '#type' => 'textfield',
-      '#title' => t('RapidILL Rapid Code'),
-      '#description' => t('Your library Rapid code (e.g. YOUR_RAPID_CODE).'),
-      '#default_value' => $config->get('rapid_ill_code'),
-      '#size' => 200,
-    ];
-    $form['rapid_ill_fieldset']['rapid_ill_branch_name'] = [
-      '#type' => 'textfield',
-      '#title' => t('RapidILL Branch Name'),
-      '#description' => t('Your library branch name (e.g. Main).'),
-      '#default_value' => $config->get('rapid_ill_branch_name'),
+      '#title' => t('Power Automate Webhook URL'),
+      '#description' => t('The full URL of the Power Automate HTTP trigger that writes ILL requests to a SharePoint list.'),
+      '#default_value' => $config->get('sharepoint_webhook_url'),
       '#size' => 200,
+      '#required' => TRUE,
+      '#maxlength' => 1024,
     ];
 
     $form['actions']['submit'] = [
@@ -163,15 +145,8 @@ class RoblibIllSettingsForm extends FormBase
       $config->set('evergreen_password', $eg_password)->save();
     }
 
-    // RapidILL settings.
-    $config->set('rapid_ill_username', $form_state->getValue('rapid_ill_username'))->save();
-    // Only update the password if a new value was entered.
-    $password = $form_state->getValue('rapid_ill_password');
-    if (!empty($password)) {
-      $config->set('rapid_ill_password', $password)->save();
-    }
-    $config->set('rapid_ill_code', $form_state->getValue('rapid_ill_code'))->save();
-    $config->set('rapid_ill_branch_name', $form_state->getValue('rapid_ill_branch_name'))->save();
+    // SharePoint settings.
+    $config->set('sharepoint_webhook_url', $form_state->getValue('sharepoint_webhook_url'))->save();
   }
 
 }
\ No newline at end of file
diff --git a/upei_roblib_ill.install b/upei_roblib_ill.install
index 8ec547a..fda2615 100644
--- a/upei_roblib_ill.install
+++ b/upei_roblib_ill.install
@@ -27,6 +27,19 @@ function upei_roblib_ill_update_9301() {
     ->save();
 }
 
+/**
+ * Remove obsolete RapidILL configuration keys.
+ */
+function upei_roblib_ill_update_9302() {
+  \Drupal::configFactory()->getEditable('upei_roblib_ill.settings')
+    ->clear('rapid_ill_username')
+    ->clear('rapid_ill_password')
+    ->clear('rapid_ill_code')
+    ->clear('rapid_ill_branch_name')
+    ->save();
+}
+
+
 /**
  * Implements hook_schema().
  */