## How do I upload data for a single campaign?

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**Step 1**  
Once you have started setting up your campaign and have given it a meaningful name, upload a CSV file containing your recipient data.

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**Step 2**  
Help us identify the encoding of your file using **(1)**. Once you have identified the correct encoding, continue to the next step **(2)**.

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**Step 3**  
Map your column headers to our data fields. Select the appropriate column from your uploaded file for each of the optilyz data fields you wish to use.

**Important**: the following data is required for each address:

- _First Name & Last Name - **or** - Full Name_  
- _Street & House Number - **or** - Street and house number_  
- _City,_  
- _Zip code_

**Personalization**: You can personalize more than just name and addresses. Learn more about personalization [here](https://help.optilyz.com/en/support/solutions/folders/43000585724). If you would like to add personalization fields, map them accordingly to one of the Individualisation fields.

**Voucher Codes**: You can use voucher codes to track your campaigns. Learn more [here](https://help.optilyz.com/en/support/solutions/folders/43000552526).

_Important: You can map your voucher codes at this step with one of these 2 options:_  
1. _option: Select "VoucherCode" for your desired voucher field in your csv. You need to connect both fields in Step 3 (Visuals) again. Done._  
2. _option: Select one of the Individualisation fields for your desired voucher field in your csv. Done._

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In the next steps you will upload your visuals and get a summary.

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