How To Fix VC590 - Text modules have been changed to document text modules

SAP Error Message - Details

• Message type: E = Error

• Message class: VC - SD Customizing

• Message number: 590

• Message text: Text modules have been changed to document text modules

What causes this issue?

The text module (SD_$$$$_...._...) which has up to now as a long text
more precisely described Includes, was converted to a documentation
element.
The following is valid for the documentation element:
Id = 'TX'
Object = Include name
The text module was not deleted.

Error message extract from SAP system. Copyright SAP SE.