> For the complete documentation index, see [llms.txt](https://doc.sysdevmobile.com/mss-extensibility/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.sysdevmobile.com/mss-extensibility/mss-5.0/untitled-1/article/ext_article_validatepriceanddiscounts.md).

# EXT\_Article\_ValidatePriceAndDiscounts

Function to validate if inputted price and discount are valid using MSS rules.

*Input parameters*:

* inDocumentType – Type of the document;
* inCustomerCode – Code of the customer;
* inArticleCode – Code of article;
* inCurrentPrice – Price;
* inCurrentDiscount1 – Discount 1;
* inCurrentDiscount2 – Discount 2;
* inCurrentDiscount3 – Discount 3;
* inCurrentDiscount4 – Discount 4;
* inOriginalPrice – Price;
* inOriginalDiscount1 – Discount 1;
* inOriginalDiscount2 – Discount 2;
* inOriginalDiscount3 – Discount 3;
* inOriginalDiscount4 – Discount 4;
* inLineType – Line type (N – Normal / B – Bonus / O – Offer / D - Returns);

*Output parameters*:

* outResultCode – Return code:

1: OK\
0: Error\
-1 Error in field price\
-2 Error in field discount 1\
-3 Error in field discount 2\
-4 Error in field discount 3\
-5 Error in field discount 4

{% hint style="info" %}
Note: The error message is shown inside the process, the different returns codes serve to, for example, set the focus in the correct field.
{% endhint %}


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