SAP Message BG005 - Warranty type & not allowed

Diagnosis
The master warranty entered is not allowed in this field, as itswarranty type does nothave the correctwarrantycategory.
The program currently only supports two warranty categories for eachtechnical object. Each warranty type is uniquely assigned to a warrantycategory.
You can only enter warranties of the category 'guarantor' in the upperscreen area, and warranties of the category 'warrantee' in the lowerscreen area.

Procedure
Enter an allowed value, and use the input help if necessary.