Message type: E = Error
Message class:  HRPADRU_528VIEWS - Messages for Maintain Position/Work Center Characteristics 
Message number: 001
Message text: Choose object for assignment the Document
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message HRPADRU_528VIEWS001 typically occurs in the context of HR (Human Resources) module operations, particularly when dealing with document assignments in the SAP system. This error indicates that the system requires the user to choose an object for the assignment of a document, but it has not been specified or is missing.
Cause: Missing Object Selection: The user has not selected an object (like an employee or a specific HR-related entity) to which the document should be assigned.
Configuration Issues: There may be configuration issues in the HR module that prevent the system from recognizing the object. Authorization Issues: The user may not have the necessary authorizations to view or select the required objects. Data Inconsistencies: There could be inconsistencies or missing data in the HR master data that prevent the assignment.
Solution: Select the Object: Ensure that you have selected the appropriate object (e.g., employee, position, etc.) before attempting to assign the document. Check
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
HRPADRU_528VIEWS000 Assign document for object &1 &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
HRPADRUTRV111 Wage type codes &1 and &2 assigned to privilege &3 overlap
What causes this issue?  You have updated a tax privilege in Customizing for <LS>Payroll Russia </> under <LS>Tax and Social Insuran...
HRPADRU_528VIEWS002 Assign Nature of Work for object &1 &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
HRPADRU_528VIEWS003 Choose object for assignment the Nature of Work
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.