Getting error while calling API as "java.lang.IllegalArgumentException: Contains non-LDH ASCII characters"Issue While calling the API getting an error message as "java.lang.IllegalArgumentException: Contains non-LDH ASCII characters".Please find below an example of the ServiceNow API: 2025-06-09 06:28:30 (824) Default-thread-12 E0DF79992B46AE989F54FD84CE91BF56 txid=c340461d2b46 SUA_48c17ed207131000dada43c0d1021e83 WARNING *** WARNING *** No URIs provided, removing all URI matcher rules2025-06-09 06:28:30 (825) Default-thread-12 E0DF79992B46AE989F54FD84CE91BF56 txid=c340461d2b46 SUA_48c17ed207131000dada43c0d1021e83 WARNING *** WARNING *** Request not sent to uri= https://domain_sub_domain.com/api/ServiceNowTickets/health : java.lang.IllegalArgumentException: Contains non-LDH ASCII characters: Contains non-LDH ASCII characters NOTE: If the customer opens the API on a browser directly, it gives the response as expected, but calling the API results in an issue.ReleaseAny ServiceNow releaseCauseThis error usually means that the hostname part of your URL is invalid, specifically due to characters that do not conform to LDH rules.uri=https://domain_sub_domain.com/api/ServiceNowTickets/health What are "LDH ASCII characters"? LDH stands for: Letters (a-z, A-Z)Digits (0-9)Hyphen (-) According to domain naming standards (RFC 952 and RFC 1123), hostnames can only contain LDH characters — meaning no underscores (_), spaces, or other special characters The issue is with domain_sub_domain.com — It contains an underscore (_), which is not valid in DNS hostnames.Resolution- Confirmed that the issue is with the Hostname, as it contains non-LDH characters (such as underscores), which are not allowed. - To avoid this issue: If your DNS is configured as domain_sub_domain.com and you cannot change it, you will need to coordinate with your Network/DNS team to address this. - Recommended options: 1. Rename the hostname to remove any non-LDH characters (preferred solution), or 2. Use an IP address or an alias (CNAME) that does not contain underscores.