TDS FVU Generation error -- Incorrect employee reference number/deductee reference number

Error in TDS > FVU Generation
Incorrect employee reference number/deductee reference number provided. Please provide valid employee reference number/deductee reference number.

Solution :
In this case you are requested to please check the Employee / Deductee Master, In case PANAPPLIED , PANINVALID or PANNOTAVBL just enter Employee's Reference Number or Deductee's Reference Number.
If PAN quoted for any deductee record is INVALID then mandatory to quote Deductee/Employee reference number.
Deductee/Employee reference number is 10 DIGIT Unique Numeric Code.
In case issue occur please check the Employee or Deductee master and correct it.
Hope this helps.