Review the master-data choices on requests from another production cell. The tasks use new material and partner keys so you have to read the request rather than repeat a previous answer. Preserve the base unit, plant and role assignments when you change a description or payment term. A duplicate name is a reason to inspect the key, not to merge records.
These are independent exercises. You may create a record directly in its maintenance screen or reach that screen through the menu. The checker reads the saved fields. It also distinguishes a partner block from the absence of purchasing roles, because each leads to a different operational correction. Use the document values the task supplies; no supplier quote needs to be guessed.