Gdzie jest błąd - Trigger ?

AS 
BEGIN 
    /* enter trigger code here */ 
    
    
        if (exists (SELECT r.OBECNOSC FROM REJESTRACJA_NA_ZAWODY r
       
        
        where ID_ZAWODY = 1 and
        ID_CZLONKA_KOLA = 5 and OBECNOSC = 'T'))
        
        then
        insert into WYNIKI(ID,ID_CZLONKA_KOLA,ID_ZAWODY,WYNIK)
        values(50,6,1,50);
        
END

INSERT INTO WYNIKI (ID, ID_CZLONKA_KOLA, ID_ZAWODY, WYNIK)
VALUES (
    33, 
5,
1, 
100
);

QL Message : -693
Too many concurrent executions of the same request

Engine Code    : 335544663
Engine Message :
Too many concurrent executions of the same request
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger 'TEST2' line: 18, col: 9
At trigger '...