Add err.number 503 to error routine.

Hi Experts,

We have a function that opens a CSV file, loops thru all records and uploads each record to a web site thru an API call.
Now we realized some time that site is offline and would like to add to the existing error routine below logic that if error number is 503 then it should wait a minute and try again call that API (the command that caused to throw the error).

Err_Proc:
    Select Case Err.Number
        Case 9
            '' display a message if you want
           Resume Next  '''' assuming you want to just pick up at the statement after the error
        Case Else
            s = "Insert into API_Errors(ErrorMessage,TableName, [TableID],FileName, ValuesSent) Values ('" & Err.Number & "--" & Err.Description & "','" & sTable & "'," & Nz(pk, "") & ",'" & sFile & "','') "
            CurrentDb.Execute s
'            MsgBox Err.Number & "--" & Err.Description, vbOKOnly
'            Resume ExitImportDataToCaspio
            Resume Next
    End Select

PS. for a detailed description of the function in question see here
.
Thanks