The hospital gave the first registration form, but did not fill in whether it was entered into the system.

Excuse me, are you asking, "What if the hospital registered for the first time and didn't fill it out and enter it into the system?" Specific measures are as follows:

If the hospital provides the first registration form, but does not fill in the relevant information, you can contact the relevant departments of the hospital and ask them if they need you to provide this information, or if there are other requirements that you need to fill in. If the hospital needs you to provide this information, they can instruct you how to fill out the form, or provide an electronic or paper form for you to fill out.

If the hospital doesn't ask you to provide this information, you can keep the form for future use. If you need to use the information in the form, you can fill in the relevant information yourself according to the tips in the form, or contact the relevant departments of the hospital to obtain the required information.