How to create the Global Flexfield JG AP_INVOICES?

Hello experts,

Please help me how to create the Global Flexfield JG AP_INVOICES?

We performed all steps according to the document http://docs.oracle.com/cd/E18727_01/doc.121/e13663/T465174T465177.htm
on the Test instance but we couldn’t create the Global Flexfield JG AP_INVOICES.

At what moments should we take our attention the first to receive the possibility for Global Flexfilds creating?

I would like to take your attention that settings have been done for Greek Localization which <Oracle Support> supports.

Thank you and regards,

Nataliya