Message type: E = Error
Message class:  WRF_PRC_CUST - Purchasing, Seasonal Procurement Customizing messages 
Message number: 012
Message text: Also select the field 'Date Shift Allowed'
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 WRF_PRC_CUST012 typically relates to issues in the pricing configuration, particularly in the context of date shifts for pricing conditions. This error can occur when there are inconsistencies or misconfigurations in the pricing setup, especially regarding the allowed date shifts for pricing conditions.
Cause: The error message WRF_PRC_CUST012 is often triggered by one of the following reasons: Date Shift Configuration: The system does not allow a date shift for the pricing condition being processed. This could be due to settings in the pricing procedure or condition records. Inconsistent Data: There may be inconsistencies in the master data or transaction data that do not align with the pricing configuration. Missing Configuration: The configuration for the pricing procedure may not have been set up to allow date shifts, or the specific condition type may not support it.
Solution: To resolve the error, you can take the following steps: Check Pricing Procedure: Go to the transaction code V/08 to
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
WRF_PRC_CUST011 No data available
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
WRF_PRC_CUST010 Also select the field 'Monitor Quantity Deviation'
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
WRF_PRC_CUST013 Also select the field 'Automatically Process Remaining Quantity'
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
WRF_PRC_CUST014 Deletion of entry &1 not allowed
What causes this issue?  You tried to delete an entry for an order type with the active value 'Take accuont of OTB bucket'. This is not allo...
Click on this link to search all SAP messages.