BAPI_CONTRACT_CHANGE

Hi Experts,

Trying to Change(ME32K) Contract outline agreements using BAPI_CONTRACT_CHANGE in LSMW. Have set the value ITEM_CONDITION-CHANGE_ID = 'U' and filled all the X structures also.

The data is being posted without any errors but instead of changing the existing line items, it is appending the

line items to the given Purchasing document number.

Not sure why this is happening. Does anyone know why this is happening? Is it a bug or am I doing something wrong? Please share your ideas.

Thanks.