Issue in receiving customs declaration into GTS

Hello Experts,

Greetings!

Could you please help me as I am facing an issue in customs management with below scenario (R/3 system to GTS).

Successful case; Delivery has only oneGR(101) material document : Document will be transferred to GTS system(Customs declaration will be created automatically)

Unsuccessful case: Delivery has multiple GR's(Splitting into many) , Document will not be transferred to GTS system, so no customs declaration.

I hope, I explained the issue clearly, Could you please help me out to overcome this issue.

Thanks!

Regards,

Anand