CTP Checking ProcedureA full capable-to-promise (CTP) check consists of the following steps:
The CTP settings in the Items - Planning (cprpd1100m000) session determine which checks LN actually carries out. In the ATP Handling (cprrp4800m000) session, you can temporarily disable one or more of these checks. Step 1. Determine appropriate level for standard ATP check and
extended CTP checks If family CTP is enabled for the plan item, LN checks if the date for which the CTP must be computed falls within the family CTP horizon:
Step 3. Extended CTP check If the ATP found in Step 2 is insufficient, LN can carry out an extended CTP check, depending on the CTP settings for the plan item. This check can be:
A component CTP check can be multilevel, involving several BCM levels (depending on the settings for each component involved). Step 4. Channel ATP check If channel ATP is enabled for a plan item and the item is going to be sold to a business partner in a particular channel, LN also carries out a channel ATP check. The resulting value is compared with the result of Steps 2 and 3 (the regular ATP/CTP check), and the smallest of these values is used as the final CTP value. Note To execute a full CTP check, the item does not need an item master plan. If you include a capacity CTP check, resource master plans are required.
Example Graphic example: Item A is produced on (critical) resource R, and uses item C as a (critical) component. You enabled component CTP checks and capacity CTP checks. You did not select the Family CTP check box nor the Channel ATP check box for item A in the Items - Planning (cprpd1100m000) session. For item C, only standard ATP checks are enabled. LN carries out the following procedure when you enter a sales order for item A:
Example: CTP checking Filing cabinets are manufactured by pressing sheet metal in the right shape with a plate press. The metal sheet and the plate press are both critical in CTP. For the filing cabinet, component CTP checks and capacity CTP checks are enabled. Family CTP and channel ATP are not used. Assume an order is received for 450 filing cabinets, due in week 6. Production data:
Cumulative ATP/CTP data:
The CTP is checked according to the following procedure:
The conclusion of the CTP check is: You are capable of promising 400 (150 + 250) filing cabinets in week 6.
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