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Double URL Encoding advised for Product Numbers

When submitting product numbers to API endpoints, apply double URL encoding to handle special characters like forward slashes (/), question marks (?), spaces and plus signs (+) that may be present in product numbers. Single encoding may not be sufficient and can result in HTTP 404 errors or malformed requests. For example, encode ABC/123+DEF as ABC%252F123%252BDEF.

Alternatively, you can retrieve a URL-friendly version of the product number from the GET endpoint response, which provides a pre-encoded identifier safe for use in subsequent API calls.