I am getting error while trying to use expression in a calculated field

Hello Experts

I am new to PEGA and trying to learn about it (from Pega CSA Mission in PDN).(I do have experience to configure and develop in tools such as salesforce and serviceNow)

I am getting the attached error while I am trying to use expression in a calculated field:

Please help in proceeding further by resolving the issue

@RishiJ34

you will receive this error if SetUpTime , RepairTime and CleanupTIme Properties MyOrg-RishisAp-Work-Create or MyOrg-RishisAp-Work and so on.

For better understanding cause for this error. Go through below topic to acquire knowledge how pega finds rules.

Class Pattern and Direct Inheritance

Rule Resolutions

and Go thought keywords like what is Primary, Top means

@RishiJ34

You need to create all 3 dependent properties first.

Lets say, if you want to write an expression A = B + C, you need to declare variables B & C first, same concept.

@AvikMitra yes just created three variables : SetUpTime , RepairTime and CleanupTIme

Now I am able to perform it for the field total field