Diagnosis
This message is displayed when one of the following conditions issatisfied -
a) The properties of the posting key used for the Withholding Taxposting during invoice or payment is not correct
b) The Withholding Tax document is reversed
c) For One-cycle gross up
,, the tax base for atleast one tax code is not 100%
,, the tax base and the tax rate are not equal for the other taxcode
d) The program cannot generate the sequence number certificate.

System Response
No sequential number assigned to the Withholding Tax item

Procedure
a) For invoice posting, the posting key must not be flagged for payment.For payment posting, the posting key must be flagged for payment
b) Check if the document is reversed. If it is reversed sequence numberis not assigned
c) For one-cycle grossing up, 2 WT items are required with the same WTcode and one item with 100% of WT base and the other item withpercentage of WT base as same as WT rate.
d) Check the reference key 3. This value must be maintained.