Dear Cagla,

Perhaps, the issue could be in a fact that you have not created new number series for the year 2017?
You need a proper number series definition for most registers in which you are creating records.
If you do not have them available under the list of your settings in the proper module, perhaps, you don't have access rights for it and should ask your IT / support person to check this.

Best regards,
Eberstein Business Solutions

HansaWorld Business Partner
----------------------------
Exceeding Customer Expectations
www.ebersteins.com
support@eberstein.lt