Kindly help me to solve the attached screen shot issue
while posting the document in the t.code of FB50 i m getting the error as follows
Entry NELC 0000530100 does not exist in SKB1 - check your entry
Message no. 00058
Input values must be defined in Table SKB1. The value or values 'NELC 0000530100 ' are not specified in this table.
Check whether the input is correct and correct if necessary.
Procedure for System Administration
If this is not an incorrect entry, check the system settings and change them if necessary.
If there is a connection to the Customizing system, you can maintain the system settings by choosing Customizing in the Performance Assistant or Maintain Entries (F5) when displaying the help in a modal dialog box.