This is a fine answer but it is not the problem that many of us are having.  the issue for me is that the system somehow flipped all my 1099 Vendors codes to "no".  This appears to have happened after I ran my 1099 MISC and was ready to run my 1099 NEC Vendors.  This has created an enormous problem and completely the fault of QB since they were all in there yesterday and this has taken hours to recover and we are not close yet.