$this->importableFieldsMetadata = array_merge([
'do_not_import' => ['title' => ts('- do not import -')],
'contact_id' => ['title' => ts('Contact ID'), 'name' => 'contact_id', 'type' => CRM_Utils_Type::T_INT, 'options' => FALSE, 'headerPattern' => '/contact?|id$/i'],
- 'external_identifier' => ['title' => ts('External Identifier'), 'name' => 'external_identifier', 'type' => CRM_Utils_Type::T_INT, 'options' => FALSE, 'headerPattern' => '/external\s?id/i'],
+ 'external_identifier' => ['title' => ts('External Identifier'), 'name' => 'external_identifier', 'type' => CRM_Utils_Type::T_STRING, 'options' => FALSE, 'headerPattern' => '/external\s?id/i'],
], $importableFields);
}
}