Message type: E = Error
Message class:  MIB_TRAVEL - MPAPPS: Travel: message class 
Message number: 001
Message text: An error occured while verifying existence of &1
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 MIB_TRAVEL001 typically indicates that there is an issue with verifying the existence of a specific object or entity in the system, often related to travel management or related modules. The placeholder &1 in the message usually represents the specific object (like a travel request, trip, or other related entity) that the system is trying to verify. Possible Causes: Missing Object: The object you are trying to verify (e.g., a travel request or trip) may not exist in the system. Incorrect Input: The input parameters or identifiers used to search for the object may be incorrect or malformed. Authorization Issues: The user may not have the necessary permissions to access the object or perform the verification. Data Consistency Issues: There may be inconsistencies in the database or issues with data integrity that prevent the system from finding the object. System Configuration: There may be configuration issues in the travel management module or related
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
MIB_TRAVEL000 The function module &1 does not exist
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
MIB_TIME000 Please restrict your search criteria
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
MIB_TRAVEL002 The trip number cannot be initial
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
MIB_TRAVEL003 No configuration found
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.