2804342 - It is not possible to save changes to permissions on portal - Could not save changes. For more details, see trace files

When attempting to save changes to permissions or restore inheritance, and error occurs:

 !  Could not save changes. For more details, see trace files.

When checking the defaultTrace files, the following errors are found:

Couldn't create ACL. : (No text available)
[EXCEPTION]
com.sap.security.api.UMException: Couldn't create ACL. : (No text available)
at com.sap.security.core.acl.imp.AclManager.createAcl(AclManager.java:189)
at com.sapportals.portal.acl.AclManager.createAcl(AclManager.java:66)
at com.sapportals.portal.pcd.gl.AclHandle.createNewAcl(AclHandle.java:312)
(...)
Caused by: com.sap.security.core.acl.imp.wcm.AclExistsException: (No text available)

AND

The following Error is thrown by the VM [java.lang.StackOverflowError]. ErrorQueueHandler will just trace it. The caller component should take care to process it properly.
java.lang.StackOverflowError
at java.lang.ClassLoader.getCallerClassLoader(ClassLoader.java:1494)
at java.lang.Class.getMethod(Class.java:1651)
(...)
at com.sap.portal.ivs.global.bridge.webservice.BridgeClient.sendRequest(BridgeClient.java:195)
at com.sap.portal.ivs.global.bridge.session.SecuritySessionManager.sendRequestUsingSameSession(SecuritySessionManager.java:412)
at com.sap.portal.ivs.global.bridge.sender.SenderBridge.sendRequest(SenderBridge.java:276)
at com.sap.portal.ivs.global.roles.RemoteProducerAccessImpl.sendToRemote(RemoteProducerAccessImpl.java:536)
at com.sap.portal.ivs.global.roles.RemoteProducerAccessImpl.send(RemoteProducerAccessImpl.java:745)
(...)
at com.sap.security.core.umap.imp.UserMapping.getUserMappingData(UserMapping.java:354)
at com.sapportals.portal.prt.service.usermapping.UserMappingService.getMappingData(UserMappingService.java:145)

• Enterprise Portal
• KBA environment session

ACL, permission, change, reset, restore, inheritance, pcd, user, security, zones, high, low, safety , KBA , EP-PIN-SEC-ACL , ACL Editor , EP-PIN-PRT , Portal Runtime , Problem