Before commissioning this work
For an immigration application, read the checklist attached to the relevant visa process rather than borrowing instructions from a university or professional regulator. Requirements can differ even within the same country.
A practitioner credential should be matched to the actual language direction and person assigned. If the source has a third language, ask how that material and its stamps will be handled before agreeing the translation.
Keep the source scan and completed translation together. If the recipient asks for a correction or a more legible seal, identify the exact page and request before assuming a new certification chain will resolve it.

