The error was
There is a bug written for this.
Resync Catalog returns RMAN-20052: invalid datafile create SCN error [ID 343213.1]
The solution that is given missed 1 step.
How to check this
1. Look what the oldest backup entry is in the controlfile.
rman> connect target;
rman> list backup of summary;
look for the oldest backup entry.
2.check what the oldest backup entry is in the catalog