Q1: What kind of policy should I use?
Q2: In addition, what kind of code should I write in the policy?
Q3: I want to have a sample if possible.
Without knowing the specifics of your use case, you could do it in Javascript using a Javascript Policy
Depending on your use case, the functions you would use are one of the following:
var decodedURIComponent=decodeURIComponent(uriComponent) var decodedURI = decodeURI(encodedURI)
You could do something similar with Python/Java.
Thank you very much. But, It cannot be yet settled.
Sorry, the information that I wrote was short.
-Target data is audio binary
-Above way is tried, however the following errors occur.
"Execution of JavaScript-1 failed with error: Javascript runtime error: "URIError: Malformed URI sequence."
https://community.apigee.com/questions/56540/how-to-decode-url-encoded-audio-binary-in-apigee.html