Message type: E = Error
Message class:  WOST_WSSO_DLV_WD - Retail Store: message class for Deliver Goods WD UI 
Message number: 007
Message text: Credit Memo &1 was saved
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 WOST_WSSO_DLV_WD007 typically indicates that a credit memo has been saved, but there may be issues related to its processing or validation. This message is often associated with the handling of credit memos in the SAP system, particularly in the context of sales and distribution (SD) or financial accounting (FI).
Cause: Data Inconsistencies: There may be inconsistencies in the data entered for the credit memo, such as incorrect customer information, pricing issues, or missing mandatory fields. Authorization Issues: The user may not have the necessary authorizations to process or approve the credit memo.
Configuration Issues: There could be configuration settings in the SAP system that are not aligned with the business processes, leading to errors during credit memo processing. Document Flow Issues: The credit memo may be linked to other documents (like invoices or deliveries) that are not in the correct status or have not been processed properly.
Solution: Check Data Entry: Review the
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
WOST_WSSO_DLV_WD006 Invoice &1 was saved
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
WOST_WSSO_DLV_WD005 Delivery quantity in item(s) &1 is greater than open quantity
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
WOST_WSSO_DLV_WD008 Billing Documents &1 were saved
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
WOST_WSSO_DLV_WD009 Deliveries &1 were saved
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.