2450592 - "Failed to read URL prefix info" (/sap/public/icf_info/icr_urlprefix) shown on trace file

• One of the back-end systems for the SAP Web Dispatcher contains a Logon Group with a special character, such as “&”.
  For instance: “test&purposes”
• Executing "sapwebdisp pf=<path to profile> -checkconfig" raises the following errors:

Checking SAP Web Dispatcher Configuration
=========================================
….
Retrieving url info with HTTP from server <Instance host of Backend system>:< HTTP port>...OK

ERROR in url info from server location: /sap/public/icf_info/icr_urlprefix


Check ended with 1 errors, 0 warnings

• In the SAP Web Dispatcher trace file the following messages appear:

[Thr 5456] IcrIHandleHTTPClientRequest: dest='<Instance host of Backend system>:< HTTP port>' URL='/sap/public/icf_info/icr_urlprefix' -> 0
……
[Thr 5456] ICT: parse path table version= '1.0'
[Thr 5456] ICT: parse path table entry 0: 'PREFIX'='/sap/bc/path1/path2/'
[Thr 5456] ICT: parse path table entry 0: 'CASE'=''
[Thr 5456] ICT: parse path table entry 0: 'GROUP'='test'
[Thr 5456] ICT: parse path table entry 0: 'purposes'='VHOST=*:*;'
[Thr 5456] *** ERROR => ICT: syntax error in text description (line=2). [ictxxptab.c  787]
[Thr 5456] ICT: IctUpdatePathTableFromTextDescription() -> 29
[Thr 5456] *** ERROR => IcrIRequestInfoFromAppserver, system <nr>: IctUpdatePathTableFromTextDescription() failed: Syntax error(29) [icrxx.c      3749]
[Thr 5456] *** WARNING => Failed to read URL prefix info for system <nr> (ABAP,HTTP): Internal ICM error(-1) [icrxx.c      3764]

SAP NetWeaver system

checkconfig, icr_urlprefix, Syntax error, URL prefix, URL map file, url info, ICT, IcrIRequestInfoFromAppserver, IctUpdatePathTableFromTextDescription, Web Dispatcher, SMLG Logon Groups. , KBA , BC-CST-WDP , Web Dispatcher , Problem