Message type: E = Error
Message class:  CNV_PE_CHECK - Check Framework messages for posting engine 
Message number: 145
Message text: Check not required for interface mapping with interface 2 of type &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 CNV_PE_CHECK145 indicates that a check is not required for interface mapping with interface type specified in the message. This typically occurs in the context of data migration or conversion processes, particularly when using SAP's tools for data migration, such as the SAP S/4HANA Migration Cockpit or other data transfer tools.
Cause: Interface Type: The error message suggests that the specific interface type (denoted by &1) does not require a check for the mapping. This could be due to the nature of the data being processed or the specific configuration of the migration project.
Configuration Issues: There may be a misconfiguration in the migration settings or the mapping definitions that leads to this message being triggered. Version Compatibility: The error could also arise if there are compatibility issues between the version of the SAP system and the migration tools being used.
Solution: Review Interface Type: Check the documentation or configuration for the specific
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_PE_CHECK144 WL1 parameter &1 is not filled from corresponding param. of interface 1
What causes this issue?  Worklist parameter name: &V1& Worklist parameter ID: &V2& Interface mapping name: &V3& Interface mapp...
CNV_PE_CHECK143 Transformation rule &1 has warning or error
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE_CHECK146 Worklist item &4 has different signs (+/-) in its currency fields
What causes this issue?  A worklist item with different signs in its currency fields may not be postedSystem Response  The system checked the content ...
CNV_PE_CHECK147 Worklist item &1 has only zeros in its amount fields
What causes this issue?  Worklist items without any value cannot be posted.System Response  The worklist item &V2& with internal key &V1&a...
Click on this link to search all SAP messages.