Availability Check

Question 0

Material requirement (2)

Answer 0

• customer required del date + del qty requested by customer

- matl requirement info sent to MRP for production/procurement

Question 1

Customization steps for TOR/AC (5)

Answer 1

• define req class/type
• setup det rule for TOR
• activate TOR/AC for sched line cat
• define check groups
• define scope of AC

Question 2

Transfer of requirements (3)

Answer 2

• individually: matl req info x sched line (allows tracing orders that generated requirements)
• collectively: matl req info sum x day or week
• is a pre-requisite for AC (but AC is not pre-req for TOR)

Question 3

Types of avail check (3)

Answer 3

• check against ATP quantities: avail.stock + future rcpts - future issues. With or w/o RLT. On a first come-first served basis
• check against product allocation: setup max matl qty customer can order
• check against planning: based on demand-planning apps like SAP APO-DP

Question 4

Times relevant for sched line date (5)

Answer 4

• req del date (if can be met)
• pick/pack time
• transp planning lead time (goods issue tasks)
• loading time
• transit time:
• RLT: mmd/mrp3
• del & transp sched must be activated for doc types in img/sd/bf/ds&ts

Question 5

Backward scheduling (4)

Answer 5

• matl avail date: req del date - ship time - w/h proc time
• w/h proc time: pick/pack, loading
• ship time: transp planning, transit time
• sched line conf date: MAD + PP + L + TP + TR

Question 6

Fwd scheduling (4)

Answer 6

• stock insufficient on MAD calc during back sched
• if MAD is set in the past today’s date is used
• MAD redetermined in the future based on scope of check
• sched line conf date calc as in back sched

Question 7

Delivery scenarios (5)

Answer 7

• complete delivery: MAD determined to meet full order qty
• partial delivery: multiple MAD can be determined to define different conf dates x sched line item
• one-time delivery: confirms qty avail on req del date and cancels the balance
• part del for customer controlled in cmd/sad/ship or manually in the order header data ship tab
• part del for customer/matl controlled in CMIR or manually in the order item data ship tab

Question 8

AC with RLT (5)

Answer 8

• insufficient stock on MAD calc by back sched
• RLT is added to current date
• if resulting date meets MAD calc then fwd sched is not used
• for in-house prod RLT is production time
• for ext procurement RLT is GR time

Question 9

Material avail date calc (3)

Answer 9

• MAD: load date - the higher value of pick/pack and transp plan
• load date: req del date - transit time - load time
• if MAD is set in the past during back sched date is defaulted to today

Question 10

Define req class/type (3)

Answer 10

• TOR/AC become globally avail within SAP ERP for that req class
• req class O41 is pre-config for SD and TOR/AC come pre-selected
• define req type and assign a req class to the req type

Question 11

Setup det rule for req type (1)

Answer 11

-assign req types to item cat / mrp type comb

Question 12

Activate TOC/AC at sched line cat (3)

Answer 12

• activate/deactivate TOR/AC for sched line cat
• after activating via req class/type you can fine-tune and deactivate for selected sched lin cat
• same applies to del item cat via availckoff field

Question 13

Define check groups (7)

Answer 13

• field totalsales: matl req info gen during order proc is sent to MRP sum by order, day or week
• field totdlvreqs: matl req info gen during del proc is sent to MRP sum by order, day or week
• field block qtrq: prevents issues from simultaneous AC triggered by diff users by block conf qty
• field no check: matl excluded from AC if check group w/ field no check selected is assigned
• field acum: prevents conf of more qty than is avail for ATP as when receipt is delayed after AC conf qty
• field response: if acum is used it controls whether to issue output in case of a shortage
• field relchkplan: relevant for AC against planning

Question 14

Define scope of AC (2)

Answer 14

• controlled by comb of check grp + check rule

- controls: stocks, in/outward movements, etc

Question 15

Default check group (2)

Answer 15

• check grp assigned to mmd/sgp via default value or manual data entry
• default maintained for plant + matl type comb

Question 16

Default AC rule x sales area (2)

Answer 16

• field fix date/qty: prevents backlog proc and rescheduling. Not to be used w/ part del
• field avail chk rule: auto selection of del proposals from AC overview screen (one-time, full or part)

Question 17

AC processing (4)

Answer 17

• checked x schedule line (del dates and qty)
• checked x MAD (if del AC then AC x pick date)
• checked x delivery plant
• influenced by TOR and complete/part del

Question 18

Backorder and resched (3)

Answer 18

• backorder happens when AC is not able to find qty to confirm schedule lines
• resched allows to release qty blocked by low prior conf order and use it in a high prior unconfirmed one
• the 2 types of backorder proc are manual w/ backorder proc and via resched