Cannot resolve collation conflict for column 2 in SELECT statement.

SELECT --Все по Матрице!
    CONVERT(NVARCHAR(50),F.UnitName,120) AS Fil,
    CONVERT(NVARCHAR(50),TP.UnitName,120) AS TP,
    COUNT(CP.Name) AS MatrAll
FROM
    (SELECT * FROM ADDAXDB_APPSERVER.dbo.Unit WHERE TypeID = 1) AS K 
    INNER JOIN (SELECT * FROM ADDAXDB_APPSERVER.dbo.Unit WHERE TypeID = 2) AS F
        ON K.UnitID = F.ParentID
    INNER JOIN (SELECT * FROM ADDAXDB_APPSERVER.dbo.Unit WHERE TypeID = 3) AS TP
        ON F.UnitID = TP.ParentID
    INNER JOIN (SELECT * FROM ADDAXDB_APPSERVER.dbo.Unit WHERE TypeID = 4) AS ST
        ON TP.UnitID = ST.ParentID
    INNER JOIN (SELECT * FROM ADDAXDB_APPSERVER.dbo.Unit WHERE TypeID = 5) AS FIO
        ON ST.UnitID = FIO.ParentID
    INNER JOIN ADDAXDB_APPSERVER.dbo.cp_ControlPoints AS CP
        ON CP.GAID = FIO.UnitID
WHERE CP.ResourceId = 1 AND F.UnitName LIKE '%' 
GROUP BY F.UnitName,TP.UnitName
 
UNION ALL
 
SELECT --Все по Искре!
    CONVERT(NVARCHAR(50),PP.City,120) AS Fil,
    CONVERT(NVARCHAR(50),TP.name,120) AS TP,
    COUNT(PP.DeviceID) AS IskALL    
FROM
    iskra_tashtagol.dbo.Points AS PP
    INNER JOIN  iskra_tashtagol.dbo.TP_USPD AS TP ON PP.ConcentratorID = TP.kod
GROUP BY PP.City,TP.name