Message type: E = Error
Message class:  VKKCPH - Policyholder Change 
Message number: 001
Message text: Enter a contract
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 VKKCPH001: "Enter a contract" typically occurs in the context of contract management or sales and distribution processes within SAP. This error indicates that the system expects a contract to be specified, but none has been provided in the relevant transaction or document.
Cause: Missing Contract Reference: The most common cause is that the user has not entered a contract number in the relevant field where it is required. Incorrect Transaction: The transaction being executed may require a contract, but the user is in a context where a contract is not applicable.
Configuration Issues: There may be configuration settings in the SAP system that require a contract for certain processes, and these settings may not align with the current transaction.
Solution: Enter a Contract: The most straightforward solution is to ensure that you enter a valid contract number in the required field. Check if the contract exists and is active. Check Transaction Context: Verify
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
VK20157 There are coinsurance costs. Transfer posting is not possible
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
VK20156 Error in call ISCD_COINS_GET_CODE_FOR_ICDR
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
VKKCPH002 Specify a previous policyholder
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
VKKCPH003 Specify a follow-up policyholder
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.