This restriction is there by design.

Check this thread -

https://pdn.pega.com/forums/pegarules-process-commander/prpc-71/changing-property-types-introduction-to-data-modeling-exercise

Thank you very much Ravi....

Withdraw the rule in next version and try to create that rule with same name in next higher version. 

Thank you very much for the reply.

To achive this we should have two open working rule set versions. Is there other way to achive this?

Hi,

I think this is the only way to change the defintion, otherwise create a fresh new property with required definition and chnage all referencing rules of old property to consider new property.

Regards,

Kalam.

Thank you very much Kalam....

Follow below steps to change the type using only one ruleset version -

1) Save as property into higher ruleset version

2) Change its availability to Withdrawn

3) Change its type

4) Save and check-in

4) Check-out the property

5) Change availability to Yes

6) Check-in

Good trick Ravi. Never tried this before

Vamshi