SQL71005: The reference to the column [106] could not be resolved - sql

Question

This is more annoying then an actual issue, from initially 100's of errors and warning in a visual studio solution the last Rebuild I was left with just 2 identical warnings, and yes they can be suppressed but wondered if anyone else has had a similar issue, appears to be the UNPIVOT and use of an OPENQUERY, and I say all other issues resolved. The Solution builds fine I just prefer no warnings and good housekeeping.
SQL71005: The reference to the column [106] could not be resolved.
SQL71005: The reference to the column [107] could not be resolved.
SELECT #providerCode AS [Provider_Code]
, #siteCode AS [Site_Code]
, #departmentCode AS [Department_Code]
, #startDate8am AS [Period_DateTime_Start]
, #endDate8am AS [Period_DateTime_End]
, [pvt].[items] AS [Metric_ID]
, CAST([pvt].[Value] AS VARCHAR(255)) AS [Metric_Value]
FROM (
SELECT SUM(CASE
WHEN DATEDIFF([mi], [openq1].[ArrivalDateTime], [openq1].[CompletedDateTime]) > 240
THEN 1
ELSE 0
END) AS [106]
,SUM(CASE
WHEN DATEDIFF([mi], [openq1].[ArrivalDateTime], [openq1].[CompletedDateTime]) > 240
THEN 0
ELSE 1
END) AS [107]
FROM OPENQUERY([HRI-INFOPROD],'SELECT [Patient].[PatientId]
, [AdmissionEvent].[AdmitDateTime]
, [AEAttendance].[ArrivalDateTime]
, [AEAttendance].[CompletedDateTime]
FROM [dbo].[Patient]
INNER JOIN [dbo].[AEAttendance]
ON [AEAttendance].[PatientId] = [Patient].[PatientId]
INNER JOIN [dbo].[AdmissionEvent]
ON [Patient].[PatientId] = [AdmissionEvent].[PatientId]
LEFT JOIN [dummy].[ActivePatient] AS [dummy]
ON [Patient].[PatientId] = [dummy].[PatientId]
AND DATEDIFF(HH,[AEAttendance].[CompletedDateTime], [AdmissionEvent].[AdmitDateTime]) BETWEEN -24 AND 24
WHERE [AdmissionEvent].[ADMTYCode] = ''21''
AND [AdmissionEvent].[IsCancelled] = 0
AND [dummy].[PatientId] IS NULL') AS [openq1]
WHERE [openq1].[AdmitDateTime] >= #startDate8am
AND [openq1].[AdmitDateTime] < #endDate8am
AND DATEDIFF([mi], [openq1].[CompletedDateTime], [openq1].[AdmitDateTime]) = (
SELECT MIN(DATEDIFF([mi], [openq2].[CompletedDateTime], [openq2].[AdmitDateTime]))
FROM OPENQUERY([HRI-INFOPROD],'SELECT [AdmissionEvent].[PatientId]
, [AEAttendance].[CompletedDateTime]
, [AdmissionEvent].[AdmitDateTime]
FROM [dbo].[AdmissionEvent]
INNER JOIN [dbo].[AEAttendance]
ON [AEAttendance].[PatientId] = [AdmissionEvent].[PatientId]
WHERE DATEDIFF([HH],[AEAttendance].[CompletedDateTime], [AdmissionEvent].[AdmitDateTime]) BETWEEN -24 AND 24
AND [AdmissionEvent].[ADMTYCode] = ''21''
AND [AdmissionEvent].[IsCancelled] = 0') AS [openq2]
WHERE [openq2].[PatientId] = [openq1].[PatientId]
AND [openq2].[AdmitDateTime] >= #startDate8am
AND [openq2].[AdmitDateTime] < #endDate8am
)
) AS [EDAdmissions]
UNPIVOT ([Value] FOR [items] IN ([106], [107])) AS [pvt];