> For the complete documentation index, see [llms.txt](https://tegro.gitbook.io/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tegro.gitbook.io/en/tegro-money/background-information.md).

# Background Information

{% content-ref url="/pages/4RHMGh83FLgWUfnshoVh" %}
[Payment system codes](/en/tegro-money/background-information/payment-system-codes.md)
{% endcontent-ref %}

{% content-ref url="/pages/PnxQRYlhsMBmjteek6BI" %}
[Mobile phone codes](/en/tegro-money/background-information/mobile-phone-codes.md)
{% endcontent-ref %}

{% content-ref url="/pages/j2HiReg3HySJubVK7YbJ" %}
[Alphabetic currency codes](/en/tegro-money/background-information/alphabetic-currency-codes.md)
{% endcontent-ref %}

{% content-ref url="/pages/8OW97XTIpSNhowTFCgSr" %}
[Payment statuses](/en/tegro-money/background-information/payment-statuses.md)
{% endcontent-ref %}

{% content-ref url="/pages/IzCpu2S94V0uufpvMYUO" %}
[Payment errors](/en/tegro-money/background-information/payment-errors.md)
{% endcontent-ref %}

{% content-ref url="/pages/NJEt6t9mbJK0lrJgr8dD" %}
[Customer Service](/en/tegro-money/background-information/customer-service.md)
{% endcontent-ref %}