Error in : MSmerge_tombstone

I when i am try to update data in one table having replication, it gives me the error msg below;

cannot insert duplicate key row in object 'MSmerge_tombstone' with unique index 'uc1MSmerge_tombstone'

why this happens? pls. advise how i can get rid of this message.

I discovered that the table MSmerge_tombstone on subscriber is having triggers. I removed this trigger and the problem doenot reapper. Is it advisable to do that? Pls. advise.

Thanks,

I do not think removing triggers is good idea, MSmerge_tombstone table is used by replication process to track the rows that have been deleted on the subscriber
|||Could you pls. advise how can i get rid of this error?