SAP Message 67_LOAN807 - The definition of the flow type is not permitted

Diagnosis
You have chosen a combination of flow category, calculation category,activity indicator, activity category and asset / liability indicatorthat is not permitted. This may have negative effects on the cash flowand the calculation of capital amounts. Moreover, this combination ofvalues will probably not be permitted in the next release

Procedure
Check whether the business activity can be mapped differently. See alsothe documentation and the Release Notes.
You can also take valid combinations of these fields from system tableTDTZB0A_CHECK.

721128CUS: Contradiction check flow types and sample Customizing