What does a yellow field on IDA mean?

In this work (on test : 314178000048), the B part for the role Film Director has been given to the society IDA:

But the managing society for the A part has not been set, it has been given by default to the society that added the role (IDA).

If we decide to give the A part to the society SACD, the yellow would disappear:

Therefore, the yellow means that the representation of this role, for this right-owner, is split between two different CMOs.