A view on T012K showing different results than actual table?

Hello Experts,

We have created a CDS view using a very simple query as below.

@AbapCatalog.sqlViewName: 'ZCDS_T012K'

@EndUserText.label: 'testing'

define view Zcds_Testing as select from t012k

{

mandt,

bukrs,

hbkid,

hktid,

bankn 

}

As this view is only created on T012K, it should show all the records of that table. However its giving some erroneous results. please see below.

In System1 Client 1, If T012K is only having 8 records, the view shows 385 records. - Error

In System2 Client 2, if T012K is only having 6 records, the view shows 1 record. - Error

In SystemX Client100, if T012K is having 21 records, the view shows 21 records  - Correct

SystemX is on Sfin 1.0 and System1 is on Sfin 2.0.

Not sure what can be the issue, please suggest?

Thanks