Message type: E = Error
Message class:  G01 - SAP Consolidation 
Message number: 181
Message text: From period is the same as "To" period; correct your entries
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 G01181 indicates that there is an issue with the date range specified in a financial transaction or report. Specifically, it means that the "From" period is the same as the "To" period, which is not valid for the operation you are trying to perform. This error typically occurs in financial postings, reporting, or when executing certain transactions that require a range of dates.
Cause: Identical Date Range: The most common cause is that the user has entered the same date for both the "From" and "To" fields. For example, if you are trying to run a report for a specific month, you might have accidentally set both fields to the same month and year. Incorrect Configuration: In some cases, the configuration of the system or the specific transaction might not allow for a single date to be used as both the start and end date.
Solution: Adjust Date Range: Change the
Get instant SAP help. Sign up for our Free Essentials Plan. 
G01180 * 180-199 Transfer Documents ********************************************
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
G01176 Task &1: No method assigned for reconciliation
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
G01182 Document type &1 is not assigned to a suitable task in period &2
What causes this issue?  In the target period of the transfer posting, document type &V1& needs to be assigned to a task with a task category ...
G01183 Selection does not contain any documents to be processed; check selection
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.