A fabricating apparatus in the form of a three-dimensional printer for fabricating three-dimensional fabrication objects, the apparatus comprising: a receiving unit configured to receive a designation of a scheduled fabrication start time of a fabrication object wherein the receiving unit is further configured to receive the designation of permissibility information indicating permission or non-permission to forced fabrication start at the scheduled fabrication start time, wherein the permissibility information indicates whether forced fabrication start at the scheduled fabrication start time is permitted even when the fabricating apparatus is in a condition that would interfere with the fabricating operation at the scheduled fabrication start time, wherein when the permissibility information indicates permission, it indicates that fabrication start is to be permitted at the scheduled fabrication start time even when it is in a condition that would interfere with the fabricating operation of the fabricating apparatus, wherein when the permissibility information indicates non-permission, it indicates that fabrication is not to be started even when the scheduled fabrication start time arrives in a case where it is in a condition that would interfere with fabricating operation of the fabricating apparatus; a detection unit configured to detect, using the detection result of a sensor, a change in a fabrication practicability condition of the fabricating apparatus after the time of receipt of the scheduled fabrication start time and before arrival of the scheduled fabrication start time; and an output control unit configured to output change information indicating an occurrence of a change in the fabrication practicability condition of the fabricating apparatus when the change in the fabrication practicability condition has been detected after reception of the designation of the scheduled fabrication start time, wherein the output control unit is further configured to output the change information in a case where the change in the fabrication practicability condition is detected after reception of the designation of the scheduled fabrication start time and the permissibility information indicates non-permission of the forced fabrication start. a receiving unit configured to receive a designation of a scheduled fabrication start time of a fabrication object wherein the receiving unit is further configured to receive the designation of permissibility information indicating permission or non-permission to forced fabrication start at the scheduled fabrication start time, wherein the permissibility information indicates whether forced fabrication start at the scheduled fabrication start time is permitted even when the fabricating apparatus is in a condition that would interfere with the fabricating operation at the scheduled fabrication start time, wherein when the permissibility information indicates permission, it indicates that fabrication start is to be permitted at the scheduled fabrication start time even when it is in a condition that would interfere with the fabricating operation of the fabricating apparatus, wherein when the permissibility information indicates non-permission, it indicates that fabrication is not to be started even when the scheduled fabrication start time arrives in a case where it is in a condition that would interfere with fabricating operation of the fabricating apparatus; a detection unit configured to detect, using the detection result of a sensor, a change in a fabrication practicability condition of the fabricating apparatus after the time of receipt of the scheduled fabrication start time and before arrival of the scheduled fabrication start time; and an output control unit configured to output change information indicating an occurrence of a change in the fabrication practicability condition of the fabricating apparatus when the change in the fabrication practicability condition has been detected after reception of the designation of the scheduled fabrication start time, wherein the output control unit is further configured to output the change information in a case where the change in the fabrication practicability condition is detected after reception of the designation of the scheduled fabrication start time and the permissibility information indicates non-permission of the forced fabrication start.