docs(developer): registration process enhancement by incl. status end…

…point

developer/01. Onboarding/02. Registration/05. Document Upload.md

@@ -78,6 +78,32 @@ Uploaded documents can also get viewed / downloaded by the user. To do this, the
 <br>
 <br>
 
+##### #5 Transition to the next registration step
+
+With the transition to the next process step, the endpoint 
+
+```diff
+! PUT /api/registration/application/{applicationId}/status
+```
+
+is called. In all the other registration steps, this endpoint is not called since the actual transition endpoints posting/storing the customer data in the backend is automatically doing the status change. Only for the document step this change is happening standalone.
+
+The endpoint includes following implementation logic:
+
+
+* if the application is in status "Created" the application status can only get updated to "Add_Company_Data", other status changes are not allowed (beside keeping the status the same)
+* if the application is in status "Add_Company_Data" the application status can only get updated to "Invite_User" , other status changes are not allowed (beside keeping the status the same)
+* if the application is in status "Invite_User" the application status can only get updated to "Select_Company_Role", other status changes are not allowed (beside keeping the status the same)
+* if the application is in status "Select_Company_Role" the application status can only get updated to "Upload_Documents", other status changes are not allowed (beside keeping the status the same)
+* if the application is in status "Upload_Documents" the application status can only get updated to "Verify", other status changes are not allowed (beside keeping the status the same)
+* if the application is in status "Verify" the application status can only get updated to "Submitted", other status changes are not allowed (beside keeping the status the same)
+the user can not change the status from "submitted" to any other status.
+* user can not change the status if the application is in status "Confirmed", or "Declined"
+
+<br>
+<br>
+
+
 ## NOTICE
 
 This work is licensed under the [Apache-2.0](https://www.apache.org/licenses/LICENSE-2.0).