Message type: E = Error
Message class:  /SEHS/DG_DG -  
Message number: 677
Message text: &1: &2 not together with &3 &4
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 /SEHS/DG_DG677 &1: &2 not together with &3 &4 typically relates to issues in the context of data governance or data quality management within the SAP system, particularly in the SAP Environment, Health, and Safety (EHS) module.
Cause: This error message usually indicates that there is a conflict or inconsistency in the data being processed. Specifically, it suggests that certain data elements (represented by &1, &2, &3, and &4) are not compatible or cannot coexist in the current context. This could be due to: Data
Configuration Issues: The configuration settings for the data elements may not allow them to be used together. Missing Dependencies: One of the data elements may depend on another that is not present or not correctly configured. Business Rules Violations: The data being processed may violate predefined business rules or logic that govern how certain data elements interact.
Solution: To resolve this error, you can take the following steps: Review the
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
/SEHS/DG_DG676 No entry found for reaction &1
What causes this issue?  No entry was found for the specified reaction.System Response  An entry is made in the dangerous goods check log.How to fix t...
/SEHS/DG_DG675 No entry for enterprise-spec. mixed loading rules &1 and &2 and regul. &3
 For translation: Message corresponds to NA DG675 in EA-Appl.What causes this issue?  No entry exists in the segregation table for the combination of ...
/SEHS/DG_DG678 Group &1 (&2) not together with group &3 (&4)
 For translation: Message corresponds to NA DG678 in EA-Appl.What causes this issue?  The two mixed loading groups specified cannot be loaded together...
/SEHS/DG_DG679 *************** Results of the Mixed Loading Checks *********************
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.