Summarization of customer/vendor line item in RE-Fx Posting document

Hi,

I am posting from t code RERAPP a real estate management t code for periodic posting. I am getting multiple line item of customer and vendor against multiple conditions.

Entries are coming:

Customer A Dr 100

Customer A Dr 100

Water charges Cr 100

Rent charges Cr 100

My requirement is to bring one line item for customer/vendor

Customer A Dr 200

Water Charges Cr 100

Rent charges Cr 100

I have made Line item summarization active. In make setting for summarization flo type i am not sure what is flow type of customer/vendor number as we have created flow type for condition than how can we do this setting.

Please confirm the steps to summarize customer/vendor line item.

Regards,

Deepalee