Frame Relay: debugs

Error message: %Address already in map


r1#conf
Configuring from terminal, memory, or network [terminal]? 
Enter configuration commands, one per line.  End with CNTL/Z.
r1(config)#int s0/0                          
r1(config-if)#frame-relay map ip 150.0.0.4 104 broadcast
%Address already in map
r1(config-if)#do clear frame-relay inarp
r1(config-if)#frame-relay map ip 150.0.0.4 104 broadcast
r1(config-if)#