Time dependent selection

Hi,

Can anybody help me with me problem?

I'm creating a datasource for a characteristic with time dependent attributes.

I need to have 0DATEFROM as a selection characteristic in the infopackage.

But when I do this, the load fails with the next error mesage: " ZEMPLOYEE : Data record 1 ('01000001 ') : Invalid "from" date '00000000 '". And the same error appears for all values of ZEMPLOYEE.

Does anybody how to solve the problem?