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MFG/PRO 9.0 User Guide Volume 3: Manufacturing - QAD.com

MFG/PRO 9.0 User Guide Volume 3: Manufacturing - QAD.com

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Available-to-Promise<br />

FORECASTING/MASTER SCHEDULE PLANNING 231<br />

Available-to-promise (ATP) is the un<strong>com</strong>mitted portion of inventory or<br />

planned production which is available to be promised to new sales orders.<br />

The system displays ATP quantities on master schedule reports and<br />

inquiries.<br />

ATP can be used to verify whether a sales order can be filled within a<br />

specific time frame given other demands and currently scheduled supply<br />

orders.<br />

The system calculates ATP by time period by deducting real demand from<br />

real supply. Real demand includes requirements for work order<br />

<strong>com</strong>ponents, sales orders, and required ship schedules, but excludes<br />

forecast and production forecast. Real supply includes quantity on hand,<br />

purchase orders, work orders, and repetitive schedules. A net decrease in<br />

demand increases ATP, while a net increase in demand decreases ATP.<br />

Note The system regards seasonal build quantities as real demand.<br />

The system performs the following calculation for each date when a<br />

Master Scheduled receipt is due or a seasonal build quantity is made<br />

available, causing a net increase in supply. It takes into account all sales<br />

order and required ship schedule demand and gross requirements up to the<br />

next increase in available supply.<br />

Master Scheduled Receipt – Sales Orders and Required Ship Schedules –<br />

Gross Item Requirements – Seasonal Build Net Increases + Seasonal Build<br />

Net Decreases = ATP.<br />

If demand exceeds supply, ATP for that period is zero, and the excess<br />

demand is applied as real demand against the ATP quantity for previous<br />

periods until all excess demand is eliminated or the ATP quantities for<br />

previous periods are exhausted. If the latter occurs, the system displays a<br />

negative ATP quantity for first period.<br />

ATP and the master schedule are bucketless because they are calculated<br />

using dates rather than fixed periods. However, master schedule report<br />

functions let you report ATP quantities in monthly, weekly, daily, or GL<br />

calendar period buckets.<br />

Ï See page 235.<br />

Ï See “Generating<br />

Master Schedule<br />

Reports” on<br />

page 237.

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