Message type: E = Error
Message class:  S_CUS_IMG_ACTIVITY - IMG Activity 
Message number: 079
Message text: Nothing changed
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.
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The SAP error message S_CUS_IMG_ACTIVITY079, which states "Nothing changed," typically occurs when you attempt to make changes in the SAP Customizing Implementation Guide (IMG) but the system detects that no actual changes have been made to the configuration settings. This can happen for several reasons: Causes: No Changes Made: You may have navigated through the configuration options without making any actual changes. Uncommitted Changes: If you made changes but did not save them, the system will not recognize any modifications. Incorrect Transaction: You might be in a transaction that does not allow changes or is not meant for the current configuration. Authorization Issues: Sometimes, lack of proper authorizations can prevent changes from being saved, leading to this message. System State: The system might be in a state where it cannot accept changes due to ongoing processes or locks. Solutions: Verify Changes: Ensure that you have made actual changes to the configuration settings. Double-check the fields you intended to
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