Error we are...

  Error
we are getting the below erroe while creating requistions in i procurement. This problem is only for one user as others are able to create requisitions w/o any issue.
 
 
 Row 1 Charge Account - Charge account is invalid. (Program error: An error has occurred while looking up a flexfield segment combination. Please inform your support representative that: The FND_FLEX_SERVER validation function has encountered a null or negative combination ID () while trying to look up the segment values for this combination. This may indicate an invalid entry in the unique ID column of the combinations table.).
 
 
Please help
 

Plz give more input how are

Plz give more input

how are you derving the accounts - standard WF or any customization ??

Check the NA enter for the item category..its valid or not

have a look at the employee record - Book and PO account

gl code combination automatic creation

gl code combination automatic creation