Create EANCOM DESADV D96A EAN008 Subversion

Hi Experts,

I have been trying to create an EAN008 Subversion of DESADV under D96A version. I tried following the steps in this link:

Adding Message Keys and Message versions - B2B EANCOM Message Editor

However, when it is in the step to copy the message from the newly created control back to SAP-EANCOM control key, I am unable to do so - the dropdown for the target Control Key is empty.

We have B2B Add-on 1.0 SP4.

Any tips out there? Thanks!

Regards,

Rommel