SAP Message 29070 - First bill of material

Diagnosis
You want to create a variant for the BOM for the material you entered(variant BOM).
The BOM is maintained via technical status. However, on the initialscreen you entered either a valid from date or a change number whichcontains a valid from date.
INCLUDE AD_NA_GUELTIG

Procedure
You have two options:
Press ENTER.
Check your entries.
Enter another material, where the BOM is maintained according todate if appropriate.
If the material entered (and therefore the BOM) is correct, cancel thetransaction Create variant for....
On the initial screen, enter a technical status or a change numbercontaining a technical status instead of a valid from date. Choosethe function Create variant for... again.