绿卡上的名字有误

我儿子绿卡上的名字有误!错了个字母.我正在填I-90表,有两处我不确定该怎样填写合适.请教各位前辈.在Part3. "Consulate where Immigrant Visa was issued or USCIS office where status was Adjusted".填签证批准地或者绿卡批准地? "Date of Admission as an immigrant or Adjustment of Status ". 填签证批准的日期或者绿卡批准的日期还是第一次进美国海关的日期? 他是K2来美国的.谢谢.