SET TERM ^ ;

CREATE OR ALTER TRIGGER TTBAJUSTE_APUR_IPI_B02I FOR TBAJUSTE_APUR_IPI
ACTIVE BEFORE INSERT POSITION 1
AS
BEGIN
  IF (NEW.ID IS NULL) THEN
    NEW.ID = GEN_ID(GTBAJUSTE_APUR_IPI, 1);
END
^

SET TERM ; ^