---
schema_version: "1"
id: 7604871063ef86bd6e67a422b13ef850ca371b6097dc9e90240f27f468567939
title: LongSfid()
collection: developer
version: current
locale: en-us
portal_url: https://docs.salesforce.com/developer/current/en-us/marketing-cloud/ampscript/references/salesforce/mc-ampscript-reference-salesforce-long-sfid.md
canonical_url: https://developer.salesforce.com/docs/marketing/marketing-cloud-ampscript/references/mc-ampscript-salesforce/mc-ampscript-reference-salesforce-long-sfid.html
source_site: developer.salesforce.com
content_type: documentation
content_hash: c05acd6c35385c49beeb8508384efd530171366b040eb7d86a8565434068e763
products:
  - AMPscript for Marketing Cloud
  - Marketing Cloud
---
# LongSfid()

Returns an 18-character Salesforce ID when provided with a 15-character ID.

## Availability

<table>
  <tr>
    <td>Marketing Cloud Engagement</td>
    <td>✅ Yes</td>
  </tr>
  <tr>
    <td>Marketing Cloud Next</td>
    <td>❌ No</td>
  </tr>
</table>

## Syntax

```
LongSFID(shortSfid)
```

The `LongSFID()` function has one parameter:

- `shortSfid` (string): Required. A 15-character Salesforce ID.

## Usage

To use the function, pass it a shortened 15-character Salesforce ID.

```
%%[
  Var @shortId, @longId
  Set @shortId = "0036000000QKv5T"
  Set @longId = LongSfid(@shortId)
]%%

<p>The long ID is %%=v(@longId)=%%</p>
```

The example returns `0036000000QKv5TAAT`.