Error"Invalid Function Import Parameter" while executing the URL path in SAP Gateway

Hi Experts,

I am doing ship from ECC to my ATT system.The document is retrieving through Odata services.While retrieving the document its giving one error as

"Function 'get_document_content' returned error(s)! Gateway service NOT successful."

While checking the link through gateway client,its showing as "Invalid Function Import Parameter" with status code as 404.

Its not getting the response while going from ECC to destination system called ATT.

Could you please help me.

Thank you.

Best regards,

Bakyadevi