PTC Solution Installer (PSI) fails with error "java.io.IOException: Provided I*E configuration location(/IEConf) is readonly. Please provide writable location" in Windchill PDMLink

• PTC Solution Installer (PSI) fails with error "java.io.IOException: Provided I*E configuration location(/IEConf) is readonly. Please provide writable location" in Windchill PDMLink 
• PSI logs shows :

[main] ERROR com.infoengine.au.json.parser.DomainParserImpl - Can not create file: domain.json 
 [java] java.io.IOException: Provided I*E configuration location(/IEConf) is readonly. Please provide writable location. 
 [java]    at com.infoengine.au.json.parser.GenericParserImpl.getOrCreateConfigFile(GenericParserImpl.java:114) ~[InfoEngine.jar:?] 
 [java]    at com.infoengine.au.json.parser.DomainParserImpl.<clinit>(DomainParserImpl.java:17) [InfoEngine.jar:?] 
 [java]    at java.lang.Class.forName0(Native Method) ~[?:?] 
 [java]    at java.lang.Class.forName(Class.java:315) [?:?] 
 [java]    at com.infoengine.au.json.parser.JsonParserFactory.getParser(JsonParserFactory.java:24) [InfoEngine.jar:?] 
 [java]    at com.infoengine.json.JSONObject.initialize(JSONObject.java:115) [InfoEngine.jar:?] 
 [java]    at com.infoengine.json.JSONAdapterImpl.processRequest(JSONAdapterImpl.java:113) [InfoEngine.jar:?] 
 [java]    at com.infoengine.au.DirectoryService.executeQueryObjects(DirectoryService.java:260) [InfoEngine.jar:?] 
 [java]    at com.infoengine.au.DirectoryService.queryObjects(DirectoryService.java:205) [InfoEngine.jar:?] 
 [java]    at com.infoengine.administration.ieprop2ldif.process(ieprop2ldif.java:808) [InfoEngine.jar:?] 
 [java]    at com.infoengine.ieinstall.ConfigInfoEngine.addProperties(ConfigInfoEngine.java:356) [InfoEngine.jar:?] 
 [java]    at com.infoengine.ieinstall.ConfigInfoEngine.run(ConfigInfoEngine.java:236) [InfoEngine.jar:?] 
 [java]    at com.infoengine.ieinstall.ConfigInfoEngine.main(ConfigInfoEngine.java:138) [InfoEngine.jar:?]