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Changing Account Products 
Transaction bca_or_cop (change account product) groups together the entire functionality of business object Product Change (Account). The system carries out all important business-related steps that need to be executed in order to successfully change the product of an account, in accordance with auditing requirements.
The prerequisites described in the Product Change (Account) section must be met and the settings listed must have been made.
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1. From the SAP Easy Accessscreen, choose Account Management ® Account ® Account Master Data ® Change Account Product.
This brings you to the Change Account Product screen where you can choose one of the following three modes:
¡ Create
¡ Change
¡ Display
If you are in Create or Change mode, you can carry out the following process steps:
2. Choose the Account Product Change tab page and enter the required data.
For more information, see the Editing Product Changes (Account) section.
Depending on the order status of the product change, you can execute the following functions:
¡ Enter Product Change (Account)
¡ Delete Product Change (Account)
¡ Activate Product Change (Account)
¡ Deactivate Product Change (Account)
¡ Execute Product Change (Account)
The system changes the product change (account) and the data on the Administration and Technical Details tab pages in accordance with the processing status.
For more information, see the Displaying Administrative Data and Displaying Technical Details sections.