Please refer the test below,
1.Transact a DSO to Approve state where the part is serviceable i.e. part is reserved to the Assembly side.
2. Go to the parent ASO of the DSO, Search for the material line.
3. Unreserve the material line.
4. Reserve the line using the RMB option Manual Reservation. The same serial captured during disposition should be reserved.
5. Based on the above transaction '4', the Structure Line No is removed.
6. The consequence of the same is such - One can reserve the DSO and once the DSO is approved again with a different disposition code, in the ASO - Material tab the same material line is created again. Hence there is duplication of the same material line.
Any comments on this observation?