Message type: E = Error
Message class:  RSM2 - Monitor assistant help texts 
Message number: 181
Message text: Number of reduced requests in DTA &1: &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 RSM2181, which states "Number of reduced requests in DTA &1: &2," typically occurs in the context of Data Transfer Workbench (DTW) or during data transfer processes in SAP systems. This message indicates that the system has reduced the number of requests that can be processed due to certain conditions or limitations.
Cause: Data Quality Issues: The data being processed may have inconsistencies or errors that prevent it from being transferred successfully.
Configuration Issues: There may be configuration settings in the Data Transfer Workbench or related modules that limit the number of requests that can be processed. System Limitations: The system may have reached a threshold for processing requests, leading to a reduction in the number of requests that can be handled. Batch Job Settings: If the data transfer is being executed as a batch job, the job settings may limit the number of requests processed.
Solution: Check Data Quality: Review the data being
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
RSM2180 Inconsist. Reduction for DTA &1;Last reduc.req &2 > Calculated Max-SID &3
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSM2179 Inconsistant DM-Admin for DTA &1; DMALL &2 < Calculated Max-SID &3
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSM2182 DTA &1 successfully reduced from request &2 to request &3
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSM2183 Requests to be deleted in WO-DSO &1 must be older than 1 day
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.