A radiographic imaging system comprising: a radiographic imaging apparatus (102, 103) configured to generate a radiographic image based on radiation emitted from a radiation generating apparatus; control means configured to control the radiographic imaging apparatus (102, 103) based on processing requests received from each of a first terminal apparatus and a second terminal apparatus; state management means (135, 137) configured to manage a state of the control means; determination means configured, based on the state of the control means, to determine whether a processing request output from the second terminal apparatus is executable; and processing request management means configured to manage processing requests from the second terminal apparatus, wherein the second terminal apparatus is configured to acquire a right to control the control means from the first terminal apparatus, and the control means is configured to control the radiographic imaging apparatus (102, 103) based on a processing request received from the second terminal apparatus, wherein in a case where the control means controls the radiographic imaging apparatus (102, 103) based on the processing request from the second terminal apparatus, the first terminal apparatus is configured to acquire the right to control the control means from the second terminal apparatus, and wherein the processing request management means enqueues the processing request if the processing request is executable, and does not enqueue the processing request output from the second terminal apparatus in a case the processing request is not executable. a radiographic imaging apparatus (102, 103) configured to generate a radiographic image based on radiation emitted from a radiation generating apparatus; control means configured to control the radiographic imaging apparatus (102, 103) based on processing requests received from each of a first terminal apparatus and a second terminal apparatus; state management means (135, 137) configured to manage a state of the control means; determination means configured, based on the state of the control means, to determine whether a processing request output from the second terminal apparatus is executable; and processing request management means configured to manage processing requests from the second terminal apparatus, wherein the second terminal apparatus is configured to acquire a right to control the control means from the first terminal apparatus, and the control means is configured to control the radiographic imaging apparatus (102, 103) based on a processing request received from the second terminal apparatus, wherein in a case where the control means controls the radiographic imaging apparatus (102, 103) based on the processing request from the second terminal apparatus, the first terminal apparatus is configured to acquire the right to control the control means from the second terminal apparatus, and wherein the processing request management means enqueues the processing request if the processing request is executable, and does not enqueue the processing request output from the second terminal apparatus in a case the processing request is not executable.