In this blog post, you’ll learn more about the Sybase Error Control character in XML output and the reason for receiving this error
Sybase SQL Error Message
Control character in XML output
Reason for this Error
A non-space character less than hex 20 was encountered while generating XML content. Consider base64 encoding strings that contain control characters before using them as XML content. This can be accomplished in a FOR XML query or SQLX function by casting the string to a type such as LONG BINARY.