diff --git a/wp-admin/erase-personal-data.php b/wp-admin/erase-personal-data.php
index 5ea801d136..d08292dac7 100644
--- a/wp-admin/erase-personal-data.php
+++ b/wp-admin/erase-personal-data.php
@@ -10,7 +10,7 @@
 require_once __DIR__ . '/admin.php';
 
 if ( ! current_user_can( 'erase_others_personal_data' ) || ! current_user_can( 'delete_users' ) ) {
-	wp_die( __( 'Sorry, you are not allowed to erase data on this site.' ) );
+	wp_die( __( 'Sorry, you are not allowed to erase personal data on this site.' ) );
 }
 
 // Handle list table actions.
diff --git a/wp-admin/includes/privacy-tools.php b/wp-admin/includes/privacy-tools.php
index ff3e6cadd2..2e4589d6d2 100644
--- a/wp-admin/includes/privacy-tools.php
+++ b/wp-admin/includes/privacy-tools.php
@@ -20,7 +20,7 @@ function _wp_privacy_resend_request( $request_id ) {
 	$request    = get_post( $request_id );
 
 	if ( ! $request || 'user_request' !== $request->post_type ) {
-		return new WP_Error( 'privacy_request_error', __( 'Invalid request.' ) );
+		return new WP_Error( 'privacy_request_error', __( 'Invalid user privacy request.' ) );
 	}
 
 	$result = wp_send_user_request( $request_id );
@@ -28,7 +28,7 @@ function _wp_privacy_resend_request( $request_id ) {
 	if ( is_wp_error( $result ) ) {
 		return $result;
 	} elseif ( ! $result ) {
-		return new WP_Error( 'privacy_request_error', __( 'Unable to initiate confirmation request.' ) );
+		return new WP_Error( 'privacy_request_error', __( 'Unable to initiate user privacy confirmation request.' ) );
 	}
 
 	return true;
@@ -49,7 +49,7 @@ function _wp_privacy_completed_request( $request_id ) {
 	$request    = wp_get_user_request( $request_id );
 
 	if ( ! $request ) {
-		return new WP_Error( 'privacy_request_error', __( 'Invalid request.' ) );
+		return new WP_Error( 'privacy_request_error', __( 'Invalid user privacy request.' ) );
 	}
 
 	update_post_meta( $request_id, '_wp_user_request_completed_timestamp', time() );
@@ -104,7 +104,7 @@ function _wp_personal_data_handle_actions() {
 					add_settings_error(
 						'action_type',
 						'action_type',
-						__( 'Invalid action.' ),
+						__( 'Invalid user privacy action.' ),
 						'error'
 					);
 				}
@@ -116,7 +116,7 @@ function _wp_personal_data_handle_actions() {
 					add_settings_error(
 						'action_type',
 						'action_type',
-						__( 'Invalid action.' ),
+						__( 'Invalid user privacy action.' ),
 						'error'
 					);
 				}
@@ -297,20 +297,20 @@ function wp_privacy_generate_personal_data_export_group_html( $group_data, $grou
  */
 function wp_privacy_generate_personal_data_export_file( $request_id ) {
 	if ( ! class_exists( 'ZipArchive' ) ) {
-		wp_send_json_error( __( 'Unable to generate export file. ZipArchive not available.' ) );
+		wp_send_json_error( __( 'Unable to generate user privacy export file. ZipArchive not available.' ) );
 	}
 
 	// Get the request.
 	$request = wp_get_user_request( $request_id );
 
 	if ( ! $request || 'export_personal_data' !== $request->action_name ) {
-		wp_send_json_error( __( 'Invalid request ID when generating export file.' ) );
+		wp_send_json_error( __( 'Invalid request ID when generating user privacy export file.' ) );
 	}
 
 	$email_address = $request->email;
 
 	if ( ! is_email( $email_address ) ) {
-		wp_send_json_error( __( 'Invalid email address when generating export file.' ) );
+		wp_send_json_error( __( 'Invalid email address when generating user privacy export file.' ) );
 	}
 
 	// Create the exports folder if needed.
@@ -318,7 +318,7 @@ function wp_privacy_generate_personal_data_export_file( $request_id ) {
 	$exports_url = wp_privacy_exports_url();
 
 	if ( ! wp_mkdir_p( $exports_dir ) ) {
-		wp_send_json_error( __( 'Unable to create export folder.' ) );
+		wp_send_json_error( __( 'Unable to create user privacy export folder.' ) );
 	}
 
 	// Protect export folder from browsing.
@@ -326,7 +326,7 @@ function wp_privacy_generate_personal_data_export_file( $request_id ) {
 	if ( ! file_exists( $index_pathname ) ) {
 		$file = fopen( $index_pathname, 'w' );
 		if ( false === $file ) {
-			wp_send_json_error( __( 'Unable to protect export folder from browsing.' ) );
+			wp_send_json_error( __( 'Unable to protect user privacy export folder from browsing.' ) );
 		}
 		fwrite( $file, '<!-- Silence is golden. -->' );
 		fclose( $file );
@@ -395,7 +395,7 @@ function wp_privacy_generate_personal_data_export_file( $request_id ) {
 	$file = fopen( $json_report_pathname, 'w' );
 
 	if ( false === $file ) {
-		wp_send_json_error( __( 'Unable to open export file (JSON report) for writing.' ) );
+		wp_send_json_error( __( 'Unable to open user privacy export file (JSON report) for writing.' ) );
 	}
 
 	fwrite( $file, '{' );
@@ -410,7 +410,7 @@ function wp_privacy_generate_personal_data_export_file( $request_id ) {
 	$file = fopen( $html_report_pathname, 'w' );
 
 	if ( false === $file ) {
-		wp_send_json_error( __( 'Unable to open export file (HTML report) for writing.' ) );
+		wp_send_json_error( __( 'Unable to open user privacy export file (HTML report) for writing.' ) );
 	}
 
 	fwrite( $file, "<!DOCTYPE html>\n" );
@@ -504,11 +504,11 @@ function wp_privacy_generate_personal_data_export_file( $request_id ) {
 	$zip = new ZipArchive;
 	if ( true === $zip->open( $archive_pathname, ZipArchive::CREATE ) ) {
 		if ( ! $zip->addFile( $json_report_pathname, 'export.json' ) ) {
-			$error = __( 'Unable to add data to JSON file.' );
+			$error = __( 'Unable to add data to user privacy export file (JSON format).' );
 		}
 
 		if ( ! $zip->addFile( $html_report_pathname, 'index.html' ) ) {
-			$error = __( 'Unable to add data to HTML file.' );
+			$error = __( 'Unable to add data to user privacy export file (HTML format).' );
 		}
 
 		$zip->close();
@@ -529,7 +529,7 @@ function wp_privacy_generate_personal_data_export_file( $request_id ) {
 			do_action( 'wp_privacy_personal_data_export_file_created', $archive_pathname, $archive_url, $html_report_pathname, $request_id, $json_report_pathname );
 		}
 	} else {
-		$error = __( 'Unable to open export file (archive) for writing.' );
+		$error = __( 'Unable to open user privacy export file (archive) for writing.' );
 	}
 
 	// Remove the JSON file.
@@ -758,7 +758,7 @@ function wp_privacy_process_personal_data_export_page( $response, $exporter_inde
 	$request = wp_get_user_request( $request_id );
 
 	if ( ! $request || 'export_personal_data' !== $request->action_name ) {
-		wp_send_json_error( __( 'Invalid request ID when merging exporter data.' ) );
+		wp_send_json_error( __( 'Invalid request ID when merging user privacy exporter data.' ) );
 	}
 
 	$export_data = array();
@@ -909,7 +909,7 @@ function wp_privacy_process_personal_data_erasure_page( $response, $eraser_index
 	$request = wp_get_user_request( $request_id );
 
 	if ( ! $request || 'remove_personal_data' !== $request->action_name ) {
-		wp_send_json_error( __( 'Invalid request ID when processing eraser data.' ) );
+		wp_send_json_error( __( 'Invalid request ID when processing user privacy eraser data.' ) );
 	}
 
 	/** This filter is documented in wp-admin/includes/ajax-actions.php */
diff --git a/wp-admin/options-privacy.php b/wp-admin/options-privacy.php
index f0715a2f06..437b3eb68a 100644
--- a/wp-admin/options-privacy.php
+++ b/wp-admin/options-privacy.php
@@ -10,7 +10,7 @@
 require_once __DIR__ . '/admin.php';
 
 if ( ! current_user_can( 'manage_privacy_options' ) ) {
-	wp_die( __( 'Sorry, you are not allowed to manage privacy on this site.' ) );
+	wp_die( __( 'Sorry, you are not allowed to manage privacy options on this site.' ) );
 }
 
 $action = isset( $_POST['action'] ) ? $_POST['action'] : '';
diff --git a/wp-admin/privacy-policy-guide.php b/wp-admin/privacy-policy-guide.php
index 566f3f14cd..137a5016f9 100644
--- a/wp-admin/privacy-policy-guide.php
+++ b/wp-admin/privacy-policy-guide.php
@@ -10,7 +10,7 @@
 require_once __DIR__ . '/admin.php';
 
 if ( ! current_user_can( 'manage_privacy_options' ) ) {
-	wp_die( __( 'Sorry, you are not allowed to manage privacy on this site.' ) );
+	wp_die( __( 'Sorry, you are not allowed to manage privacy options on this site.' ) );
 }
 
 if ( ! class_exists( 'WP_Privacy_Policy_Content' ) ) {
diff --git a/wp-includes/user.php b/wp-includes/user.php
index 284b3d71b2..d2977e3467 100644
--- a/wp-includes/user.php
+++ b/wp-includes/user.php
@@ -3612,7 +3612,7 @@ function wp_create_user_request( $email_address = '', $action_name = '', $reques
 	);
 
 	if ( $requests_query->found_posts ) {
-		return new WP_Error( 'duplicate_request', __( 'An incomplete request for this email address already exists.' ) );
+		return new WP_Error( 'duplicate_request', __( 'An incomplete user privacy request for this email address already exists.' ) );
 	}
 
 	$request_id = wp_insert_post(
@@ -3680,7 +3680,7 @@ function wp_send_user_request( $request_id ) {
 	$request    = wp_get_user_request( $request_id );
 
 	if ( ! $request ) {
-		return new WP_Error( 'invalid_request', __( 'Invalid user request.' ) );
+		return new WP_Error( 'invalid_request', __( 'Invalid user privacy request.' ) );
 	}
 
 	// Localize message content for user; fallback to site default for visitors.
@@ -3862,19 +3862,21 @@ function wp_generate_user_request_key( $request_id ) {
 function wp_validate_user_request_key( $request_id, $key ) {
 	global $wp_hasher;
 
-	$request_id = absint( $request_id );
-	$request    = wp_get_user_request( $request_id );
+	$request_id       = absint( $request_id );
+	$request          = wp_get_user_request( $request_id );
+	$saved_key        = $request->confirm_key;
+	$key_request_time = $request->modified_timestamp;
 
-	if ( ! $request ) {
-		return new WP_Error( 'invalid_request', __( 'Invalid request.' ) );
+	if ( ! $request || ! $saved_key || ! $key_request_time ) {
+		return new WP_Error( 'invalid_request', __( 'Invalid user privacy request.' ) );
 	}
 
 	if ( ! in_array( $request->status, array( 'request-pending', 'request-failed' ), true ) ) {
-		return new WP_Error( 'expired_link', __( 'This link has expired.' ) );
+		return new WP_Error( 'expired_request', __( 'This user privacy request has expired.' ) );
 	}
 
 	if ( empty( $key ) ) {
-		return new WP_Error( 'missing_key', __( 'Missing confirm key.' ) );
+		return new WP_Error( 'missing_key', __( 'This user privacy request is missing the confirmation key.' ) );
 	}
 
 	if ( empty( $wp_hasher ) ) {
@@ -3882,17 +3884,6 @@ function wp_validate_user_request_key( $request_id, $key ) {
 		$wp_hasher = new PasswordHash( 8, true );
 	}
 
-	$key_request_time = $request->modified_timestamp;
-	$saved_key        = $request->confirm_key;
-
-	if ( ! $saved_key ) {
-		return new WP_Error( 'invalid_key', __( 'Invalid key.' ) );
-	}
-
-	if ( ! $key_request_time ) {
-		return new WP_Error( 'invalid_key', __( 'Invalid action.' ) );
-	}
-
 	/**
 	 * Filters the expiration time of confirm keys.
 	 *
@@ -3904,11 +3895,11 @@ function wp_validate_user_request_key( $request_id, $key ) {
 	$expiration_time     = $key_request_time + $expiration_duration;
 
 	if ( ! $wp_hasher->CheckPassword( $key, $saved_key ) ) {
-		return new WP_Error( 'invalid_key', __( 'Invalid key.' ) );
+		return new WP_Error( 'invalid_key', __( 'This user privacy request confirmation key is invalid.' ) );
 	}
 
 	if ( ! $expiration_time || time() > $expiration_time ) {
-		return new WP_Error( 'expired_key', __( 'The confirmation email has expired.' ) );
+		return new WP_Error( 'expired_key', __( 'This user privacy request confirmation key has expired.' ) );
 	}
 
 	return true;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index f236d18b95..8d11ea92b5 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-49089';
+$wp_version = '5.6-alpha-49090';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.