Message type: E = Error
Message class:  CRM_BUPA_TDAR010 - Time-Dependent Appointment Rules 
Message number: 018
Message text: Enter the calendar week in the format "CW/YYYY"
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 CRM_BUPA_TDAR010018 indicates that the system expects the user to enter a calendar week in a specific format, which is "CW/YYYY". This error typically occurs in the context of business partner management or when dealing with time-related data in SAP CRM.
Cause: The error is triggered when the input for the calendar week does not conform to the expected format. The required format is: CW: This stands for "Calendar Week". YYYY: This represents the year in four digits. For example, a valid input would be CW/2023 for the first calendar week of the year 2023.
Solution: To resolve this error, ensure that you are entering the calendar week in the correct format. Here are the steps to follow: Check Input Format: Make sure you are entering the calendar week as "CW/YYYY". For example, if you want to enter the 10th calendar week of 2023, you should input CW/2023. Verify Calendar Week: Ensure that the calendar week
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CRM_BUPA_TDAR010017 No period transferred
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CRM_BUPA_TDAR010016 Enter the period in the format "period ID/YYYY"
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CRM_BUPA_TDAR010019 No validity interval transferred
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CRM_BUPA_TDAR010020 Category &1 is not permitted for the validity period
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.