Simon Dyson has been given a two-month ban from the European Tour, suspended for 18 months, following his disqualification from the BMW Masters in October.
Dyson was joint second after 36 holes at Lake Malaren when he was disqualified for signing for an incorrect score in the second round.
The 35-year-old Englishman failed to add a two-shot penalty to his card after an incident on the eighth hole, when he touched the line of his putt after marking his ball, appearing to flatten a spike mark.
Having reviewed the incident, European Tour officials charged Dyson with a "serious breach" of the Tour's code of behaviour, a charge which was upheld when Dyson appeared before a three-person disciplinary panel, chaired by Ian Mill QC, at Wentworth on Thursday.
In a statement, the European Tour announced: "The panel decided .... to impose upon Mr Dyson a period of suspension from the Tour of two months, but to suspend its operation for a period of 18 months.
"The effect of this is that, if during that 18-month period, Mr Dyson commits any breach of the Rules of Golf, his case will be referred back to the panel to determine whether in the circumstances the suspension should immediately become effective."