if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}

		response := generateCopyObjectPartResponse(partInfo.ETag, partInfo.LastModified)
		encodedSuccessResponse := encodeResponse(response)

		// Write success response.
		writeSuccessResponseXML(w, encodedSuccessResponse)
		return
	}