Generally speaking, the majority of daughter and affiliated Hanoverian societies/clubs/etc. share reciprocity with the Hanoverian Verband in Germany. So theoretically your Hanoverian can be “recorded” with the American Hanoverian Society and be eligible for year end awards, etc. But the devil is always in the details as to who issued the papers in order for the AHS to recognize them.
If your papers are from one of the recognized societies, you would need to submit a transfer of ownership form with a copy of your horse’s papers and pay the fee. That should accomplish the recording. To be eligible for year end awards, etc., you would also need to become a member of the AHS.
Look under “Forms and Policies” at www.hanoverian.org for the paperwork. Or email the AHS a copy of the horse’s papers at ahsoffice@aol.com and they should be able to email you the necessary paperwork.