Compose Formal Business Follow-Up Chat

I need a short chat reply drafted in flawless Indonesian that follows up on an ongoing job / order with a customer or professional colleague. The wording must be sangat formal dan profesional—think clear structure, polished diction, and zero slang—while still sounding warm enough to maintain good rapport.

Context is already set; I simply require the body of the message itself, ready to paste into WhatsApp or any corporate messenger. Please keep it concise, cover the current status, the next actionable step I expect from the recipient, and a courteous closing.

Deliverable:
• Final chat text (Indonesian, ~80–120 words) that meets the tone, purpose, and audience described above.