Modified By cannot be changed. Constraint Violation in isUpdateValid()

[DA_10350817]

I am using Windchill PDMLink Release 12.0 and Datecode with CPS 12.0.0.2

I am using Windchill PDMLink Release 12.0 and Datecode with CPS 12.0.0.2

There is an attribute called modified by for EPM object under visualization and attribute group and I want to change the value of that attribute through data utility

Here are the errors that I faced
com.ptc.core.meta.container.common.ConstraintException: The value for Modified By cannot be changed. Constraint Violation in isUpdateValid()

[HelesicPetr]

Hi @DA_10350817 

I guess the reason is that you use method that do not allow you to modify the attribute without checkin/out .

You should provide a code what you use and so on. This error does say nothing. 

Just that you are traying to change attribute and your change is not valid for update...

PetrH