The row was not found at the Subscriber when applying the replicated command.

Command attempted:
if @@trancount > 0 rollback tran
(Transaction sequence number: 0x000210C100000223000D00000000, Command ID: 8)


Ex:

Step 1 :-

Connect to the Distributor

select * from dbo.MSarticles

where article_id IN (SELECT Article_id from MSrepl_commands

where xact_seqno =  0x000210C100000223000D00000000 )


Step 2 :- 
 

exec sp_browsereplcmds @xact_seqno_start = '0x0013DD67000002EA007F00000000'
,@xact_seqno_end = '0x0013DD67000002EA007F00000000'
,@publisher_database_id = xxx
,@article_id = xxx
,@command_id= '8'

Step 3:- 

If data is in sync, do skip errors

For replication Errors,

select 

* 

From distributor..MSrepl_errors

Select * from MSrepl_commands Where xact_seqno>'0x0000000000000000000000000000'

Which will give the article details and issues.