Process cahin stopped at Save hierarchy event.

Hi,

In my production system we are using process chains, one process chain stopped at save hierarchy event.Uder single event there are events(save hierarchy) in parallel . Those three were stopped. After the save hierarchy event there is only attribute change run event.

I observed error message, the message was"Hierarchy that was loaded with request i_rnr can not be activated". But the hierarchies are in active version.

Could any one let me know what is the reason for this failure.