Gas, EICR and EPC — the shared upload, then what is different about each.
Gas, electrical and energy certificates all work the same way in Abodient, and then differ in ways that matter. Open a property and choose Compliance.

The picture above shows the three on one property. Each is one row: upload the certificate once, and the date on it is what drives everything after.
The file is only the evidence. Sharing a copy with your tenant is a separate step; uploading here does not send it.
A gas safety check is due every 12 months, by a Gas Safe engineer, on a certificate often called a CP12.
Give a new tenant a copy before they move in, and an existing tenant within 28 days.
It is the one duty here with no fine cap: the penalty is an unlimited fine and up to six months in prison. A lapsed gas certificate is why the exposure figure can read Unlimited.
An electrical installation report (EICR) is due at least every five years, counted from the inspection, not from when you bought the property.
If it comes back unsatisfactory, the work is due within 28 days.
A copy goes to the tenant within 28 days in England and Scotland, 14 in Wales.
An energy certificate (EPC) lasts ten years.
The catch is the rating: you cannot let a property rated F or G in England or Wales without a registered exemption.
So an EPC can be inside its ten years and still block the let. When that happens the row reads Below MEES 2030, not Valid — the problem is the rating, not the date.