Message type: E = Error
Message class:  RSDU_REPART - Messages for Repartitioning InfoProviders 
Message number: 555
Message text: Failed to check progress of conversion of SPO &1
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 RSDU_REPART555 indicates that there was a failure in checking the progress of the conversion of a DataStore Object (DSO) or InfoProvider, specifically related to the SPO (SAP BW/4HANA) conversion process. This error typically arises during the migration or conversion of data models in SAP BW/4HANA. Causes: System Performance Issues: The system may be experiencing performance issues, leading to timeouts or failures in processing the conversion. Locking Issues: There may be locks on the objects being converted, preventing the conversion process from proceeding. Data Consistency Issues: There could be inconsistencies in the data or metadata that are causing the conversion to fail.
Configuration Issues: Incorrect configuration settings in the BW system can lead to errors during the conversion process. Insufficient Resources: The system may not have enough memory or processing power to handle the conversion. Solutions: Check System Performance: Monitor the system performance and ensure that there are sufficient resources (CPU, memory, etc.) available. You
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
RSDU_REPART554 Cleanup
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSDU_REPART553 Adapt metadata of SPO &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSDU_REPART556 Conversion of InfoCube &1 to standard format
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSDU_REPART560 
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.