AAM segment creation based on MCID failing

[DarrenBiz]

We can create and update segments based on Declared Id fine. We did find an issue (feature?) where a delivery adds a foreign key (@broadLog-id) to the target schema that you have to remove to get Declared Id segment update working. Once you remove that, the Declared Id segment updates fine.

However, we want to also create an identical AAM segment based on MCID for testing, but AC keeps throwing the error:

There is nothing in any documentation showing how to get MCID segments updating and the datasource just shows the same targeting dimension as the Declared Id segments (Recipient). The only difference in the datasources is the reconciliation key which is [trackingLog/@sourceId] for MCID.

Any ideas how we target for MCID segments?

[DarrenBiz · Accepted solution]

Ok I found the solution. For some reason, this works individually or if you fork the input into each activity instead of running them in series.

It would be great to know why this works and the other doesn't but i suspect it's "working as designed"