Message type: E = Error
Message class:  ATO_CUSTOMER - ATO Messages for the End User 
Message number: 035
Message text: &1 items of all previous versions collected for deletion
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 ATO_CUSTOMER035 typically relates to issues in the context of Advanced Variant Configuration (AVC) or the handling of configurable materials in SAP. This error message indicates that there are items from previous versions of a configurable product that have been collected for deletion, but there may be issues preventing the deletion process from completing successfully.
Cause: Data Integrity Issues: The error may arise due to inconsistencies in the data related to the configurable materials or their variants. Dependencies: There may be dependencies or links to other objects (like sales orders, production orders, etc.) that prevent the deletion of the items. Authorization Issues: The user may not have the necessary authorizations to perform the deletion. System Configuration: There may be configuration settings in the system that are preventing the deletion of the items.
Solution: Check Dependencies: Review any dependencies related to the items that are being collected for deletion. Ensure that there are no active
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
ATO_CUSTOMER034 &1 unchanged items collected for export
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
ATO_CUSTOMER033 Item &1 must not be changed in this system.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
ATO_CUSTOMER036 &1 items collected for deferral to version &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
ATO_CUSTOMER037 &1 items deferred to version &2
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.