The tolerance levels provided by the TSO for the transmission services only and for which no specific charges are levied are the following:  

• 5% - 7% (depending upon the type of the entry/exit points) for exceeding booked capacity;
• 3% for the absolute value of the non-observance of the approved nomination;
• 2,5% for the absolute value of the final daily imbalance;
• +/-2,5% for the final cumulative imbalance.

TSO does not provide flexibility levels.