Exception while validating rule: An expression cannot have the same measure with and without the old

Hello,

While patching a domain, the log displayed this exception:

Started task : installRuleCfgValidation(com.retek.ride.installer.tasks.PostRegistrationRuleValidation)

Task Begun: 14:22:32.

Initializing Rpas Jni for domain at /u01/ipcoe/environments/ipcoe/domains/itemplan.

Validating rule groups for solution itemplan.

itemplan contains the following errors.

Error: RPAS exception

  Exception Type:         IllegalParse: An expression cannot have the same measure with and without the old modifier on the RHS.

Expression: NoTchAftLndBrDel = if(NoTchAftLndBr.old != 0 && NoTchAftLndBr == 0, NoTchAftLndBr.old, if(NoTchAftLndBr.old == 0 && NoTchAftLndBr != 0, 0, ignore))

Task Ended: 14:22:36.

Ended task : installRuleCfgValidation(com.retek.ride.installer.tasks.PostRegistrationRuleValidation)

Could you confirm if this is a showstopper issue?

The only workaround we could think of is having a cloned measure e.g. NoTchAftLndBr2 and put the old value inside it, before using it in the main expression.