Guy Draper, the District of Columbia's embattled protocol officer, has been told to pay back $2,500 of the $15,000 he received in city funds for preparing a report on the feasibility of creating a permanent municipal protocol office, a top mayoral aide disclosed yesterday.

Mayor Marion Barry's executive secretary, Dwight Cropp, said city lawyers had determined that the terms of two contracts he signed with Draper last September and November overlapped, and that Draper could be paid only for work done under one of them.

One of the contracts was for $2,500 and the other for $12,500. Cropp said Draper would be permitted to keep the money he was paid under the larger contract.

It was the second setback in two days for Draper, 37. On Tuesday, Barry revoked his appointment as chief of protocol, which had been made earlier this month, and Draper reverted to his previous role as acting chief. His title was totally removed yesterday from the sign on his office door.

Until city officials acknowledged last week that Draper had been paid $15,000 under the terms of the two contracts, they had insisted that Draper was serving without pay. Cropp insisted last week that the contract paid for Draper's research, not for operational duties.

Draper said he was notified of the repayment requirement verbally. "I have to do what my government instructs," he said. "I will pay it back as soon as I can."

He said he already has spent the money to meet personal obligations.

Draper had said earlier that he submitted a draft of the report to Cropp in November, and that the revised final version would be submitted next week.