Diagnosis
The infotype history of this company car shows that the employee hasalready opted out of the fuel scale charge during this tax year. Oncehaving opted out it is not permitted by the system to opt back in untilthe start of the next tax year.
Background : The Inland Revenue ruling
In order to deter employees from opting out and in repeatedly,provision is made that should an employee opt back into free fuel atany time in the same tax year that he has previously given it up afull year's charge will apply.

System Response
The system does not allow this change.

Procedure
If the previous opting out was a mistake correct this record so thatthe fuel scale charge is flagged on the old record. In the case thatthe employee has genuinely opted out and then back in it would benecessary to change the infotype records to reflect no period withinthe tax year where the fuel scale charge did not apply.