Hello Veena L 

If understood your question correctly then 

you can use the "HTTP Request" action from the "HTTP" module. 

Steps

• Drag and drop the "HTTP Request" action onto your OutSystems flow.
• Configure the action as follows:
• Method: GET
• URL: the URL you received in the API response
• Headers: if there are any headers required for authentication or authorization
• Output Type: Binary
• Assign the output of the "HTTP Request" action to a variable of type Binary.
• For example, you can create a local variable of type Binary in your OutSystems flow, and assign the output of the "HTTP Request" action to it.
• You can then use the binary data in your OutSystems application as needed. For example, you can display an image or PDF in a web block or download the file to the user's device.
• To display an image or PDF, you can use an "Image" or "PDF Viewer" widget, respectively, and set the "Content" property to the binary variable you created.To download the file to the user's device, you can use the "Download" widget and set the "Content" property to the binary variable you created. You may also need to set the "Filename" property to give the downloaded file a name.

Note that downloading binary data can take up a lot of memory and bandwidth, so you should be mindful of the size of the files you're downloading and the impact it may have on the performance of your application