Error appears in log column in the format: Entry (value) does not exist in (field name)
For example, if the data value shows '1' (as a number) and the field CHUCHKPROF in t-code POP1 requires '01', it will show the error:
Value being entered into SAP does not match the available options for the SAP field.
Check the data in the data file matches the available options in SAP and amend as necessary.
In the example above, change the format of the cell in the data file that should contain '01' to text and enter '01' so the correct value is being uploaded to SAP.