What are the effects of a goods issue posting?

Comprehensive and Detailed in Depth Explanation:

A goods issue in SAP S/4HANA Cloud (e.g., via "Post Goods Issue" app) impacts inventory and accounting.

A: Correct. It generates an accounting document (e.g., Dr. COGS, Cr. Inventory).

B: Correct. Inventory value decreases due to stock reduction.

C: Incorrect. Invoices are linked to billing, not goods issue.