The values for this custom header are UTF-8 and ISO-8859-1. Use the X-IntegrationServer-EncodeHeaders header in calls if the request/response header values can contain Unicode characters. It indicates whether the request/response headers should be base-64 decoded/encoded.
The value of this header indicates the charset to be used when encoding/decoding custom header values. If this header is omitted, the request and response headers will not be encoded/decoded.
For more information, refer to “Request Headers” in the Integration Server help.