Subject Re: [ib-support] Too many versions error
Author Charles Stanley
>I have the following error when trying to ALTER a DOMAIN:
>
>Project raised exception class EIB_ISCError with message
>'ISC ERROR CODE:335544351
>ISC ERROR MESSAGE:
>unsuccessful metadata update
>TABLE CLIENTS
>too many versions'

You may have exceeded the "limit" on metadata changes, I believe it is
255. If so, a gbak, then restore will reset the for you.