downloadable/link_api downloadable/link add downloadable/link/add items downloadable/link/list downloadable/link/remove 100 Store with requested code/id does not exist. 101 Product with requested id does not exist. 401 Incorrect resourceType, only "links" and "samples" allowed. 402 URL cannot be empty. 403 Filename was omitted, or contains unallowed characters. 404 File content should be passed as base64 string. For details, please see http://en.wikipedia.org/wiki/Base64 405 Title cannot be empty. 406 Incorrect content type only "link", "link_samples" and "sample" allowed. 408 Incorrect product type. Downloadable content, can be added only to "downloadable" products. 409 Incorrect extension of filename. 410 Uploaded file is too big. 411 Has no permissions for writing to temporary folder. 411 Cannot create sub folder in temporary folder. 412 Link or sample with specified ID was not found. 413 An allowed resource type values for remove method is: "links" and "samples". 414 Unable to save action. Details in error message. 415 Validation error has occurred. 416 Unable to remove link. Details in error message. catalog_product_downloadable_link catalogProductDownloadableLink