Verizon Rejects My Port Order

After a couple of months, Verizon rejected my port order. I don't really understand why, other the Verizon's internal processes can't handle it, because, well, some number are portable but not others. Below is what Vitelity told me:

This order was rejected by the losing carrier. The rejection reason from them is \"The customer had the number converted to a dry loop, it is not portable now. What the customer needed to do was have the DSL transferred to a dry loop and the number converted to a PSTN. Instead, the customer converted the number itself to a dry loop.\"

Thank you, Verizon.