Special Gl indicator

Hello Experts,

While passing the Downpayment in f-47 getting the error Special GL indicatir C is not Defined for down payments.

Special G/L indicator C is not defined for down payments

Message no. F5053

Diagnosis

The specified special G/L indicator is not classified as "down payment" or not listed in the list of the target special G/L indicators for indicator "F".

System Response

The entry is not accepted.

In fbkp for Special GL indicator F can I assign the target Special GL indiactor as C.It will solve but is it correct if I do like that.where does it affect.

Thanks.