AT CUSD command not working properly in siemens

AT+CNMI=1,2

AT+CMGF=1

AT
OKOK

AT+CUSD=1,1229000000000#

OK

+CUSD: 1,“Earn Rs 10 Commission. Install Airtel TV App on customer’s mobile now. Press 1 for Best Offers.”,15

AT+CUSD=1,1 OK

+CUSD: 1,“1-148=UL call+1GB/D,28D:2 , 399=UL call+1GB/D,70D:6
2-448=ULcall+1.4GB/D82D:7
3-8=L+S mob 30p/m,84D:1%
4-Rs80=Rs80 FTT
Pls Select or Enter MRP”,15

AT+CUSD=1,“7”,15

+CME ERROR: unknown+CME ERROR: ss not executed+CME ERROR: ss not executed

I am entering “7” as amount but it’s not taking any response, while the same command works fine in my wavecom model.