Message type: E = Error
Message class:  IDFIVAT - FI Localization 
Message number: 037
Message text: FI-CA module contains new data in period '&1' and year '&2'
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 IDFIVAT037 typically occurs in the FI-CA (Financial Accounting - Contract Accounts Receivable and Payable) module when there is an attempt to post or process data in a period and year that already contains new data. This can happen during various operations, such as closing periods, posting transactions, or running reports.
Cause: The error indicates that there is already existing data in the specified period and year, which prevents further processing. This is often due to: Period Locking: The financial period may be locked for posting, but new data has been entered or processed. Data Entry: New transactions or adjustments have been made in the specified period that have not been accounted for.
Configuration Issues: The system configuration may not allow postings in certain periods due to business rules or settings.
Solution: To resolve this error, you can take the following steps: Check Period Status: Verify if the period is indeed open for posting. You can
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
IDFIVAT036 Document '&1' from period '&2' and year '&3' has been reversed
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
IDFIVAT035 Document '&1' has been reversed
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
IDFIVAT038 Changes are not allowed; records in table IDFIVATT_EXT_HDR already exist
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
IDFIVAT039 '&1' is not valid VAT ident. no. for section A4 (doc. is assigned to A5)
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.