How To Fix MN397 - Function & not defined in "select block" mode

MN397 - Overview

• Message type: E = Error

• Message class: MN - Message class for subsequent settlement (Purchasing)

• Message number: 397

• Message text: Function & not defined in "select block" mode

What causes this issue?

Within the framework of interactive reporting, you have requested
function &V1&. However, this has not been defined or is not allowed in
"Select block" mode.

System Response

Function &V1& could not be performed.

How to fix this error?

If you did not request function &V1& through manual input, this message
is due to a program error. If necessary, contact your system
administrator.

Error message extract from SAP system. Copyright SAP SE.

MN397 - Details

• The SAP error message MN397, which states "Function & not defined in 'select block' mode," typically occurs when there is an issue with the way a function module or a method is being called within a select block in an ABAP program. This error indicates that the function you are trying to use is not allowed in the context of a select block.
  
  Cause:
  
  Function Module Restrictions: Certain function modules or methods cannot be called within a select block due to restrictions in the ABAP language. This is often the case for functions that perform database operations or that are not designed to be executed in a select block context.
  Incorrect Syntax: The syntax used to call the function may be incorrect or not compatible with the select block.
  Contextual Limitations: The function may require a different context or may need to be executed outside of the select block.
  
  
  Solution:
  
  
  Move Function Call Outside of Select