1. Using an activity 
   1. In Step 1 - using Load Data Page method to call a Ready Only Data Page to use lookup to open a case.
   2. In Step 2 - calling Show Harness activity with Review Harness

Getting the below error:

"The page or property D_DisplayAGMCase_Review_pa1263706068135242pz is read-only, and cannot be modified.  Calling method: com.pega.platform.clipboard.property.feature.page.internal.PageReadOnlyFeature.putScalarValue( ... )  Details: (none)"

The error is on the Step 2 of Show Harness activity in the Java 

skipDCDataModelUpdation