If you have such issue when running Special Promotions extension, please, open admin > catalog > attributes > manage attributes > SKU, and set "Yes" for "Used for Promo Rules creation".

Please, copy discount template to your custom theme from the default location:

app\design\frontend\default\default\template\amrules\checkout\discount.phtml

Do not forget to refresh the cache.

Please, contact us to get an update to the latest extension version.

1) You can use the SKU. If this option is not available open Catalog > Attributes > Manage Attributes > SKU, set property "Use for Promo Rule Conditions" to "Yes", refresh indexes (System > Index Management).

2) Another option is to create a hidden category, add a product to this category and specify the category as the condition.

Please, add the line
Mage::dispatchEvent('adminhtml_block_salesrule_actions_prepareform', array('form' => $form));

right before the line
$form->setValues($model->getData());

in the file
app\code\core\Mage\Adminhtml\Block\Promo\Quote\Edit\Tab\Actions.php

This version of Magento have this line by default, so you can upgrade it freely.

As far as you instal Special Promotions extension, you can without effort set up a persentage off the products relating only one category.

The example below shows how to specify 20% off a certain category.

Open in you admin panel: Promotions→Shopping Cart Price Rules

Conditions: None.

Actions: Perform the actions as shown on the screenshots:

If you find difficulty in setting up a percentage off specific products when using Special Promotions extension, please, see the guidance below.

It demonstrates the settings for 20% off any of three SKUs.

Open: Promotions→Shopping Cart Price Rules

Conditions: None.

Actions: Make the steps as shown on the screenshots.

If you use Product Promotions extension and can't set up a percentage off only defined products and only when a buyer ordered more then a specified number of items, please, perform the following instructions.

Open Promotions→Shopping Cart Price Rules.

Conditions: Set a condition that triggers the rule only if the cart contains 10 or more of SKU1 and/or SKU2 combined.

Actions: Set the actions to send a discount only in case SKU1 and/or SKU2 are in the cart.

To configure Fixed-Amount-Off promotions when running Special Promotions extension, go to admin panel:

Promotions→Shopping Cart Price Rules.

Specify data in the “Rule Information” tab as required. You can choose whether to supply a discount coupon code  or not.

In the “Apply” field select “Fixed amount discount” and set up the discount amount in the next field as shown below:

Don't forget to test your promotion before starting the campaign.

First of all, it's worth to note that BOGO promo ("Buy one, get one") works a bit differently than similar promotions with other product quantity.

If you don't know how to configure the promo 'Buy one product, get another one' in Special Promotions extension, please, look at the guidance below.

Conditions: None.

Actions: Set up 'buy 1, get 1' for a single SKU as shown in the example:

If you want to create a promo with the help of Special Promotions extension, you should quite understand the difference between 'Actions' and 'Conditions'.

If you have some difficulties with the settings, we suggest a short guidance.

So, what are 'Conditions' and 'Actions'?

'Conditions' define in which case your promo will be applied. 'Actions' determine what benefits a customer will get if he fulfill the promo conditions. Let's look at example:

To set up 'Actions' and 'Conditions', please, open

Admin Panel/Promotions/Shopping Cart Price Rules/

The screenshot below shows how to configure 'Conditions' for the promo.

As you can see on the screenshot, to specify 'total quantity' you need to choose 'Products subselection'.

The next picture demonstrates how to set up 'Actions' for the above considered example.

In the 'Apply' field you can specify any of the numerous promo rules according to your goals, such as 'Percent of product price discount', 'All products after N for fixed price', 'Percent discount for product set', 'Fixed amount discount' and many others.

Combining Conditions and Actions you can create a large number of different promos for various marketing campaigns.

The guidance below explains how the rule ‘The Cheapest, also for Buy 1 get 1 free’ of Special Promotions works.

This rule may be advertised as

-  ‘Buy 3 and get the cheapest product for half the price’,

-  ‘Buy 6 get 2 cheapest products for half the price’.

Please note that customers will get discount for the items from the same categories only and  they will never get discount for more than 2 items as the rule has ‘Maximum qty the discount applied to’ set to 2.

Let’s observe the steps of the rule configuration.

Please open Admin Panel > Promotions > Shopping Cart Price Rules (click ‘Add New Rule’ button) > Actions.

Step 1. Choose ‘The Cheapest, also for Buy 1 get 1 free’ action for the ‘Apply’ field.

Step 2. Use ‘Discount amount’ field to indicate discount percent for the cheapest product. You can either leave it empty or type in 100 to give the cheapest item for free.

Step 3. Use ‘Maximum Qty Discount is Applied To’ field to indicate maximum number of items for which the discount should apply. Leave it blank for no limitations.

Step 4. Use ‘Discount Qty Step (Buy X)’ field to specify how many products customers need to buy for the rule to take effect. If you indicate 3 like here, that means that from every 3 items purchased customers will get 50% off for the most expensive one. If you leave ‘0’ (zero), customers will get only 1 free item per order (if conditions are met).

Step 5. You can use all standard Magento conditions with the new actions. If you would like to provide for free or discount items only from a certain category or of a particular brand, etc, please indicate the category, brand, other conditions here.

 As you can see from the screenshot below, we have applied conditions to the 17th and 18th categories.

The guidance below shows how to use the action ‘Buy X Get Y with Percent Discount’ of Special Promotions extension.

Thanks to this action you can create promotions like ‘Buy 3 phones and get a camera with 20% discount’. 

Let’s observe the steps of the action configuration.

Please open Admin Panel > Promotions > Shopping Cart Price Rules (click ‘Add New Rule’ button) > Actions.

Step 1. Choose ‘Percent Discount: Buy X get Y Free’ for the ‘Apply’ field.

Step 2. Use ‘Discount Amount’ field to indicate the discount percent.

Step 3. Use ‘Promo Categories’ field to indicate to which categories the discounted items (Y items) should belong.

Step 4. Also you can specify SKUs of the individual products to which the discount should apply (these are Y items as well). If you specify both categories and SKUs like here, the discount will apply to both individual items and to products from the categories.

Step 5. Please use ‘Maximum Qty Discount is Applied To’ to specify maximal number of items to which the discount should apply in one order.

Step 6. Use ‘Discount Qty Step (Buy X)’ setting to indicate the number of ‘X’  items. If you specify 3 like here, it means that a customer will have to buy 3 ‘X’ items to get 20% discount for one ‘Y’ item.

Step 7. Use conditions section of the ‘Actions’ tab to specify ‘X’ items, by which the discount is triggered. In this case we indicated that ‘X’ items should be from category with ID 8  (Cell Phones).

Please be aware that ‘X’ items and ‘Y’ items can’t be the same products.

Let’s see how the rule works. There are 3 phones in the cart and 2 cameras.

Only one camera gets the 20% discount as it should be according to the rule limitations.

The guidance below shows how to use the action ‘Buy X Get Y with Fixed Discount’ of Special Promotions extension.

Thanks to this action you can create promotions like ‘Buy 3 phones and get a camera $50 off’. 

Let’s observe the steps of the action configuration.

Please open Admin Panel > Promotions > Shopping Cart Price Rules (click ‘Add New Rule’ button) > Actions.

Step 1. Choose ‘Fixed Discount: Buy X get Y with 10$ Off’ for the ‘Apply’ field.

Step 2. Use ‘Discount Amount’ field to indicate the discount amount.

Step 3. You can specify SKUs of the individual products to which the discount should apply (these are Y items as well). If you specify both categories and SKUs like here, the discount will apply to both individual items and to products from the categories.

Step 4. Use ‘Promo Categories’ field to indicate to which categories the discounted items (Y items) should belong.

Step 5. Please use ‘Maximum Qty Discount is Applied To’ to specify maximal number of items to which the discount should apply in one order.

Step 6. Use ‘Discount Qty Step (Buy X)’ setting to indicate the number of ‘X’ items. If you specify 3 like here, it means that a customer will have to buy 3 ‘X’ items to get 20% discount for one ‘Y’ item.

Step 7. Use conditions section of the ‘Actions’ tab to specify ‘X’ items, by which the discount is triggered. In this case we indicated that ‘X’ items should be from category with ID 8 (Cell Phones).

Please be aware that ‘X’ items and ‘Y’ items can’t be the same products.

The guidance below shows how to use the action ‘Buy X Get Y for Fixed Price’ of Special Promotions extension.

The only difference of ‘Buy X Get Y for Fixed Price’ action from ‘Buy X Get Y with Discount’ action is that instead of percent discount products are discounted to a fixed amount. By this rule if a customer buys three phones, he or she can buy any camera for just $200.

Let’s observe the steps of the action configuration.

Please open Admin Panel > Promotions > Shopping Cart Price Rules (click ‘Add New Rule’ button) > Actions.

Step 1. Choose ‘Fixed Price: Buy X get Y for $9.99’ action for the ‘Apply’ field.

Step 2. Use ‘Discount Amount’ field to indicate the amount to which ‘Y’ products should be discounted. If you specify 200 like here, the ‘Y’ products will cost 200 after the discount rule gets applied.

Step 3. You can specify SKUs of the individual products to which the discount should apply (these are Y items as well). If you specify both categories and SKUs like here, the discount will apply to both individual items and to products from the categories.

Step 4. Use ‘Promo Categories’ field to indicate to which categories the discounted items (Y items) should belong.

Step 5. Please use ‘Maximum Qty Discount is Applied To’ to specify maximal number of items to which the discount should apply in one order.

Step 6. Use ‘Discount Qty Step (Buy X)’ setting to indicate the number of ‘X’ items. If you specify 3 like here, it means that a customer will have to buy 3 ‘X’ items to get 20% discount for one ‘Y’ item.

Step 7. Use conditions section of the ‘Actions’ tab to specify ‘X’ items, by which the discount is triggered. In this case we indicated that ‘X’ items should be from category with ID 8 (Cell Phones).

IMPORTANT. Please be aware that ‘Buy X Get Y for Fixed Price’ and ‘Buy X Get Y with Discount’ actions work only with simple and configurable products.

The attribute is disabled for promo rules.

Solution: Enable the attribute for promo rules. To do this please go to: Admin > Catalog > Attributes > Mange Attributes > select attribute > Frontend Properties > set "Use for Promo Rule Conditions" to "Yes".

You haven’t specified the category for child products of the configurable product. The categories for parent and child products should be the same.

Let's consider the settings regarding to the promo 'Buy two, get one' for a single SKU.

Conditions: None.

Actions: Specify the following settings:

The guidance below explains how to set up the action ‘Percent discount: each 5 items with 10% off’ of Special Promotions extension.

This action enables you to offer a percent discount in case customer buy a specified number of items.  

Let’s observe the steps of the action configuration.

Please open Admin Panel > Promotions > Shopping Cart Price Rules (click ‘Add New Rule’ button) > Actions.

Step 1. Choose ‘Percent discount: each 5 items with 10% off’ field.

Step 2. Use ‘Discount Amount’ field to indicate the discount amount.

Step 3. Use ‘Discount Qty Step (Buy X)’ to specify a number of items a customer should buy to get a discount.

Step 4. At the last step specify particular category(es) or SKUs to which the rule should be applied. On the screenshot below the rule will be applied to the items of 5 and 7 categories.