### Steps to reproduce

1. Declare a project attribute as "needed in all projects"

2. Create new project

3. Fill out existing fields and click on "Speichern"


### What is the buggy behavior?

Error message is shown due to missing mandatory fields:

<img class="image_resized op-uc-image op-uc-image_inline" style="width:632px;" src="/api/v3/attachments/264830/content">

### What is the expected behavior?

If a field is declared as Begin of the insertionmandatory and does not have a default value,End of the insertion Begin of the deletion mandatory,End of the deletion make it visible in the upper section, e.g. like this&nbsp;

<img class="image_resized op-uc-image op-uc-image_inline" style="width:622px;" src="/api/v3/attachments/264831/content">

(This is just a mockup - someone with a designer background should improve this for better usability ;) )

### **Logs**

_\-_

### Screenshots and other files

see above.

### Environment information

Not depended on environment.

**OpenProject version**

Not depended on specific version, actual version 15.0.2.

**Browser**

* [ ] Chrome
* [ ] Firefox
* [ ] Safari
* [ ] Mobile Safari
* [x] Other: Edge

**Operating System**

* [x] Windows
* [ ] Mac OS X
* [ ] Mobile iOS
* [ ] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)

**Language**

de-de