I cannot provide that because it is propietary. However, I believe the issue is with the exporting from the re-trained checkpoints to the SavedModel that is causing this issue. The pre-trained object-detection models in the TF2 Zoo contain both the checkpoints and the saved_model.pb. If i try to convert the pre-trained saved_model.pb, I face no issues at all. However, if I try to export the pre-trained checkpoint (that I have just downloaded) into a *SavedModel * and then try to convert that, I get the error I just mentioned. So it has to be doing something wrong in the checkpoint to SavedModel step right (exporter_main_v2.py)?