ATP Check for Planned Orders in Repetitive Manufacturing 

Use

At the end of the planning phase before the planned orders for the finished product are transferred to production, you execute an ATP check for the planned orders with interchangeable components. The ATP check must have been executed before you can continue with the other steps in the production process – if no ATP check has been carried out, you cannot use automatic supply-to-production nor can you use the backflushing functions.

Integration

In the ATP check, the system checks the stocks/receipts of the components calculated in the planning matrix or in an individual explosion of the iPPE. The stocks and receipts of the successor products are also checked. The system uses the ATP check to create the components in the order for the finished product as the orders planned using the matrix do not contain any components at first. In this process, the system executes product substitution in the order – that is, the system copies the necessary components to the order. The distribution of the requirement quantities is done according to the ATP situation based on the stocks and receipts, according to the scope defined for the ATP check. For planned orders planned with individual explosion, the system only splits the requirements quantities as the components (input nodes) already exist for these orders.

In the ATP check, the confirmed components are fixed in the planned order of the RPM product. This fixing is irreversible.

A new ATP check carried out later updates the interchangeability data in the order, if necessary.

The product substitution orders are deleted in the next planning run as they are no longer required.

For more information on copying substitute components in the order, refer to ATP Check for Orders with Interchangeable Components and Dependent Requirements of Orders with Interchangeable Components.

Prerequisites

·        In Customizing for Production Planning and Detailed Scheduling, under Maintain Global Parameters and Defaults in the Execute tab page, enter the business event PP in the field, Result of Planned Order Check. The business event PP is delivered as standard for checking the planned orders.

·        In Customizing for the Global Available-to-Promise (Global ATP), you have defined the date from which a stock is regarded as valid and, therefore, available for the requirement of a component (successor) which is not valid until a later point in time.

·        In Customizing for the Global Availability Check (Global ATP), in the IMG activity, Maintain Check Mode, you have created a check mode for the availability check of the components.

You can select an entry of your choice in the Assignment field for the check mode. In the Prod.Type field, select the entry Standard.

·        In the IMG activity, Maintain Check Instructions, you have defined a check instruction for planned orders by creating an entry for your check mode and assigning the business event PP. In the other fields, you have made the following settings:

¡        Field Prod.Check: 1 First Step

¡        Field Prod.Alloc: No check

¡        Field Forecast: No check (or 2 Second step if you want to execute a check against the planned independent requirements)

¡        You have set the Rules-based ATP indicator.

¡        In the Start immediate. field, you have selected the option, Immediate Rule Evaluation, Without Previous Check.

¡        You have set the indicator, Use Product Interchangeability Master Data. 

¡        In the Rem. Rqmnt field, you have selected the option, Create Remain. Reqmnt Accord. to Prod. Interch. Master Data or Do Not Create Remaining Requirement.

¡        In the Validity Mode field, you have defined whether the system also takes account of the stock and receipt elements of a product that lie before the validity start of the product.
If you define that the system can only use the stock and receipt elements of a product whose availability date/time is within the validity period of the product, this has the following consequences: If the product only becomes valid in the future, the system cannot use any product stock that may have existed beforehand. 

¡        Field StartProd.: Availability Check Only, No Production

¡        You can define the settings for all the other fields as you require as no production should be triggered and no multi-level ATP check should be carried out.

·        You have defined an ATP Group.

·        In the IMG activity Maintain Check Control, you have linked the ATP group with the business event PP and defined the categories (stocks, planned receipts, and so on) the system is to consider in the ATP check.

·        You have entered the check mode, the ATP group and a display unit of measure in the product masters of the interchangeable components.

·        Before you can execute the ATP check for planned orders of products planned in the planning matrix, you have to set the indicator Fixing of Components Reqmts Allowed in Customizing for the Rapid Planning Matrix in the activity Maintain Global Settings.

·        If you execute the ATP check with the report mentioned below “ATP Check for Planned Orders in Repetitive Manufacturing”, you have to define a sort profile in Customizing, under ATP Check in the Order and then enter this sort profile in the global parameters and in the default values for PP/DS.

Features

Various options are available for executing the ATP check:

·        ATP Check for Planned Orders in Repetitive Manufacturing

ATP checks have to be carried out for a large number of planned orders in the area of product interchangeability. For this purpose, you can use the report ATP Check for Planned Orders in Repetitive Manufacturing (transaction /SAPAPO/RRP8). 

The report should only be used in the context of product interchangeability.

Using this report, you can select planned orders with a horizon of one to five days. Then the orders are sequenced according to the sort profile you defined in Customizing. The sort criterion may be the start date of the planned order, for example. The ATP check is accessed for every order. The stock of the component to be discontinued is consumed by the planned orders which are checked first. The ATP check transfers the successor components to the planned orders next to be checked – that is, the sequence defined by the sort profile determines which components are intended for the planned orders.

The actual sequence of the planned orders in production and the sequence in which the ATP check was carried out for the orders may be different. This may result in a situation where the components determined in the ATP check for a particular planned order do not correspond to the components actually assembled. 

·        ATP Check Using the Action Control

If you use Action Control,you can use an Action to trigger the ATP check along with the production backflush. The actions 01_SAP_PRODUCTION_BACKFLUSH and 01_SAP_ORDER_CHECK_ATP are available in Customizing for action control as standard. You can create a new action to combine the functions of the two standard actions. This means you can define that the system is first to carry out the ATP check and then the backflush when an order arrives at the first action point on the production line.

·        ATP Check in Planned Order Management

Using Planned Order Management, you can also carry out the ATP Check for individual planned orders

Example

If, for example, the planning matrix calculated a requirement of 10 pieces for component A which is to be substituted by component B and only 3 pieces of component A are available in stock which are to be used up, the system creates a product substitution order for component A for 7 pieces to redirect the requirement to component B. Therefore, a requirement of 7 pieces exists for component B. To cover this requirement for B, the system creates a planned order for 7 pieces.

Now, in the ATP check, components A and B are copied to the planned order of the finished product with 3 and 7 pieces respectively.

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