Questions about messages from the SAP Synchronization Log

Hello,

we are still using version 8.0.5

During a review of the logs of the synchronization with SAP R/3 we noticed strange messages

#1 SAPTitle
we have no influence on the Titles in SAP and can't make sense of this message yet

[810391] Error flushing changes to database.
[810237] There is already an object using this alternate key (Frau (D - DE)).

It seems to us that an attempt is being made to re-read existing objects - whether this conclusion is correct is now the question.

#2 SAPUserInSAPRole

There are some messages in the log, like this

[810391] Error flushing changes to database.
[810023] Error during execution of statement: insert into SAPUserInSAPRole (DistinguishedName, ObjectKeySAPRole, UID_SAPUser, UID_SAPUserInSAPRole, ValidFrom, ValidTo, XIsInEffect, XOrigin,
xdateinserted, xuserinserted, xdateupdated, xuserupdated, xobjectkey) values
(...)
[810143] Database error 2601: Cannot insert duplicate key row in object 'dbo.SAPUserInSAPRole' with unique index 'SAP_XA2SAPUserInSAPRole'. The duplicate key value is
(<Key><T>SAPRole</T><P>a4cb232a-a07d-4bf1-b421-dca718125396</P></Key>, b7428b34-4f33-4fddbbca-9f658f070b9c, Mar 23 2021 12:00AM, Dec 31 9999 12:00AM).
The statement has been terminated.
[System.Data.SqlClient.SqlException] Cannot insert duplicate key row in object 'dbo.SAPUserInSAPRole' with unique index 'SAP_XA2SAPUserInSAPRole'. The duplicate key value is
(<Key><T>SAPRole</T><P>a4cb232a-a07d-4bf1-b421-dca718125396</P></Key>, b7428b34-4f33-4fddbbca-9f658f070b9c, Mar 23 2021 12:00AM, Dec 31 9999 12:00AM).
The statement has been terminated.

Why does the synchronization try to read in information/assignments of roles that already exist in the DB?
Could this still be an after-effect of our migration from version 6.1.3 to version 8.0.5?

What else could we check? Many thanks for any advice that could help us further