# Invoices Used Outside UNOSOF

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Home/ Accounting/ SRI Electronic Transfer/ **SRI Electronic Management.**
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The option ADD BLANK INVOICE button, it is used to skip a sequential (SRI Invoice ID) and use it in another (accounting) system where it is necessary to use the numbering (sequential) for both export and national.

<figure><img src="/files/m4nu1hrind54w2pCHnKh" alt=""><figcaption></figcaption></figure>

#### Example

You want to skip the sequential 3005 of the batch of national invoices, for the sale of a Vehicle&#x20;

**Step 1:** Press the Add Blank Invoice button (appears only in the SRI/Invoice/Generate/Sign/Send module)

<figure><img src="/files/Hj0xoHd9oaeD7Vilfl7f" alt=""><figcaption></figcaption></figure>

**Step 2:** Check in the module: **Invoices Used Outside UNOSOF.** You will see the 3005 sequential is skipped.

<figure><img src="/files/Xqnbjfh8mBPhHDJiZQyY" alt=""><figcaption></figcaption></figure>

Step 3: An informative note can be added in the NOTE field

## Return a Sequential to use it in UNOSOF

By mistake, the sequence could have been skipped, with Add Blank Invoice.&#x20;

We will use the same previous example: return the sequential of the National lot 3005 to the SRI Invoice ID&#x73;**.**

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This option works when the skipped sequence is the last one AND the following sequences have not been used yet.
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**Step 1:** The skipped sequence (3005) is no longer available, and can be verified in the ADD BLANK INVOICE segment (national)

<figure><img src="/files/VcmKXX1dkn2eDK6Q0nQy" alt=""><figcaption></figcaption></figure>

**Step 2:** Find the sequential (3005) in Invoices Used Outside UNOSOF

<figure><img src="/files/oPyafxpHcW00SDZgbOde" alt=""><figcaption></figcaption></figure>

**Step 3:** Press the DELETE button to delete that skipped sequence, and return it to the SRI-XML generation module

<figure><img src="/files/nMHj0fyUjG8cTZBU12zg" alt=""><figcaption></figcaption></figure>

**Step 4:** Check if the sequence is available again, in the SRI-XML generation module, Add Blank Invoice (national) segment

<figure><img src="/files/6RFPGOwx9eizYkv0m3Q1" alt=""><figcaption></figcaption></figure>

## Return a sequencial to use it (when it is not the last sequence )

You should follow the same steps of the previous option, but the sequential will be available in the option: **Unused (Skipped) Invoices**, since it is not the last one, for example the sequential 2989 instead of the last one 3005.

<figure><img src="/files/XOckTiH7038Hgnpwc9Wb" alt=""><figcaption></figcaption></figure>

The steps can be found in the following manual:

{% content-ref url="/pages/-M3qdZE-RvKLxQQ7-1Wq" %}
[Unused (Skipped) Invoices](/accounting/sri-electronic-transfer/sri-electronic-management/unused-skipped-invoices.md)
{% endcontent-ref %}


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