I have a specification with id 139 but its value is a string „Mazda Coacalco", I use the following endpoint to filter by fields:
{{baseUrl}}/api/catalog_system/pub/products/search?fq=specificationFilter_139:Mazda Coacalco&O=OrderByReleaseDateDESC
What can I do to be able to search by that specification, including the whitespace?