Picking Line split for same warehouse

Hi Pioneers,

I am experiencing issue regarding “Splitting of Picking List”, as my scenario is as follows:

I have 2 warehouses, A & B. In 2 out of 100 cases it is happening that, if an item having 4 quantities is posted followed by generation of Picking list, then simultaneously from warehouse B also same quantities are getting picked, despite of sufficient available quantities in warehouse A.

Secondly, if an item having 5 quantities have been posted,followed by generation of picking lists, then the picking list is getting split (i.e, multiple picking list getting generated) for same quantities and the quantities are getting divided into 1:4 / 2:3) ratio.