BP_REST_XProfile_Update_Endpoint::validate_update( int $field_id, int $user_id, mixed $value )

	public function validate_update( $field_id, $user_id, $value ) {
		$is_required = xprofile_check_is_required_field( $field_id );
		$field       = new BP_XProfile_Field( $field_id );
		if ( 'membertypes' === $field->type ) {

			$member_type_name = bp_get_member_type_key( $value );

			// Get selected profile type role.
			$selected_member_type_wp_roles = get_post_meta( $value, '_bp_member_type_wp_roles', true );

			if ( bp_current_user_can( 'administrator' ) ) {
				if ( 'none' === $selected_member_type_wp_roles[0] ) {
					bp_set_member_type( bp_displayed_user_id(), '' );
					bp_set_member_type( bp_displayed_user_id(), $member_type_name );
				} elseif ( 'administrator' !== $selected_member_type_wp_roles[0] ) {
					$errors                  = true;
					$bp_error_message_string = __( 'Changing this profile type would remove your Administrator role and lock you out of the WordPress admin.', 'buddyboss' );
					$validations['field_id'] = $field_id;
					$validations['message']  = $bp_error_message_string;
				}
			} elseif ( bp_current_user_can( 'editor' ) ) {
				if ( 'none' === $selected_member_type_wp_roles[0] ) {
					bp_set_member_type( bp_displayed_user_id(), '' );
					bp_set_member_type( bp_displayed_user_id(), $member_type_name );
				} elseif ( ! in_array( $selected_member_type_wp_roles[0], array( 'editor', 'administrator' ), true ) ) {
					$errors                  = true;
					$bp_error_message_string = __( 'Changing this profile type would remove your Editor role and lock you out of the WordPress admin.', 'buddyboss' );
					$validations['field_id'] = $field_id;
					$validations['message']  = $bp_error_message_string;
				}
			} else {
				bp_set_member_type( bp_displayed_user_id(), '' );
				bp_set_member_type( bp_displayed_user_id(), $member_type_name );

				if ( isset( $selected_member_type_wp_roles[0] ) && 'none' !== $selected_member_type_wp_roles[0] ) {
					$bp_current_user = new WP_User( bp_displayed_user_id() );

					foreach ( $bp_current_user->roles as $role ) {
						// Remove role.
						$bp_current_user->remove_role( $role );
					}

					// Add role.
					$bp_current_user->add_role( $selected_member_type_wp_roles[0] );
				}
			}
		} elseif ( $is_required && empty( $value ) ) {
			$errors                  = true;
			$validations['field_id'] = $field_id;
			/* translators: Field name */
			$validations['message'] = sprintf( __( '%s is required and not allowed to be empty.', 'buddyboss' ), $field->name );
		}

		if (
			isset( $value )
			&& function_exists( 'xprofile_validate_field' )
			&& xprofile_validate_field( $field_id, $value, bp_displayed_user_id() )
		) {
			$errors                  = true;
			$validations['field_id'] = $field_id;
			$validations['message']  = xprofile_validate_field( $field_id, $value, bp_displayed_user_id() );
		}

		if ( ! empty( $errors ) && $validations ) {
			return $validations;
		}
	}