What are replication counters in LS Retail/LS Central?

Replication Counters

Replication counters is the field which are present in the transaction tables in LS Retail. This is a type of integer field which updates when data on the transaction table is inserted or modified. Please find the base code on Transaction Header (Table ID:- 99001472) table in LS Retail. 

Replication counter gets updated on every record insert or modify. Next question comes into my mind why replication counter needs to be updated?

As you know from my previous post, Transaction data gets replicated from Store to HO.There would be continously transaction getting inserted in the transaction tables like Trans. Sales Entry, Trans. Payment entry Etc. Replication counters helps LS to understand from where the data needs to replicated to the HO. 

Example

Consider there is only 1 store and 1 HO. The transactional data flows from store to HO. As all the sales happens in the store. On the daily basis LS transfers data from Store to HO. In order to transfer only new records on daily basis, LS updates Replication counter on the transaction tables in store and the same replication counter system maintains in the Scheduler replication counter table(99001593). This way system know which are the new records which needs to transferred.