Stock transfer from unrestricked use to customer returns

Hi

I am facing problem related to customer return. I am trying to reverse return material to customer using VL09 for qty 10 and i am gettting error deficiet of SL Bl Block Stock returns 7 pce.

I am having stock of 10 in customer return location 3000 in unrestricted use. and 3 stock is in returns as seen in mmbe.

How can i bring the 7 stock to returns in the same location i.e. 3000.

I need to do stock transfer with in the location but from unrestircted to Returns

Please help.

Thanks.