Reported for version 10
A plan that contains a cycle seems to be valid in MDC, but, when I click on export in MDC I receive error:
The error is displayed because DQC/MDC does not support loops. For many of DQC steps, it is hard to tell how they would behave in a loop, especially the steps that read data from a database or text files. Also, we believe that loops are hard to debug and it is very easy to make an infinite loop.
Nonetheless, in DQC version 10 we introduced a new workflow task – Iterate that can be used as a workaround when loops are necessary.