Sending Sales Data via IDoc WPUUMS 
In this process you can send the sales data of multiple POS transactions, summarized, to SAP Retail. You can use the IDoc WPUUMS for this to transfer the following POS transaction data:
Header data:
Store
Posting date
Transaction currency
Data of sales items
Discount information
Tax information
NoteTransfer of tender data via IDoc WPUUMS is not possible. If you wish to transfer this data also to SAP Retail, you send, in addition to IDoc WPUUMS also the IDoc WPUTAB to SAP Retail.
End of the note.
Prerequisites
You have made the following settings in PIPE Customizing.
You have set the type of the task to be carried out under
Tasks 
One-Step Processing Define Tasks 
depending on the requirements to either Immediate
Processing or Collective Processing and you have checked the correctness of the other task settings.Under
POS Transactions , you have checked the task group that is assigned to the relevant POS transaction and you assign a task group if required.You have ensured that the task group, which is assigned to the transaction type of your POS transaction, exists under
Tasks Define Task Group .You have ensured that the task to be carried out is assigned to the relevant task group under
Tasks Assign Tasks to Task Group .
Process
The task 0014 Generate IDoc WPUUMS is available for sending sales data to SAP Retail when using the IDoc WPUUMS.
If you wish to send the relevant data aggregated, you have to set an appropriate aggregation method for task processing in task Customizing. For more information, see Aggregation in Task Processing.
Carry out processing of the task for the relevant POS transactions depending on the task type. For more information, see Task Processing.
If the task has been carried out successfully, the system sets the task status for all processed POS transactions to Completed.