How to change serial number with existing one

Question

dear all,
Our user create 2 different serial number with same material. let me say A and B. A is the correct serial number but fault historical. and B is the fault serial number but correct historical. The question is can we change the serial number, A with B and still got the correct historical from B
Regards

Answer 1

if both the serial number are present in stock & are assigned to a wrong material in this case what you can do is :
Issue goods through movement 201 alongwith the existing serial numbers (mismatched) against a cost center & GL (Stock Adjustment)
Receive goods through movement 202 with correct Serial number a cost center & GL (Stock Adjustment).
eg. in your case :
Document 1 with movement 201 to remove mismatched Serial number  :
Material-- Serial Number-----Qty
A-- 1--
1
B--  2--
1
Status of both serial number will change from ESTO to AVLB
Document 2 with movement 202 to assign correct serial number :
Material-- Serial Number-----Qty
A-- 2--
1
B--   1--
1
this way you can resolve serial number mismatch case....