Queues seen ECC when MRP run

[Former Member]

Hello SAP Gurus,

We see huge number  (500 K-900 K) of queues in ECC system, when MRP run is executed at particular step, then these queues flow across to SCM.

As these queues are processing, its not possible for users to confirm the sales as Availability check / sales order confirmation is not possible in SCM.

I don't understand the behaviour of the system,why these queues are generated. Is it a normal behaviour or some weird setting mapped to be checked.

Please help

Regards

Rahul Chitte

[Former Member · Accepted solution]

Hello Rahul,

You have provided too little information to actually analyze the problem. Answers to a few questions below can help in pin-pointing the problem:

1. What all modules are you using in SCM? DP, SNP, PPDS, GATP, etc?

2. Which products (e.g. FGs, SFGs, etc.) are planned in APO and which products are planned in ECC? Specifically out of all materials that are planned by business, how many of such materials have MRP Type X0 set-up for them?

3. Does your MRP run use net change planning (NETCH) or regenerative planning (NEUPL)?

4. How is your transactional data integration between APO and ECC? Is it real-time or periodic? If it is real-time then you can perhaps look at making it periodic, however, there are quite a few things that should be carefully considered before this option is chosen.

5. Which transactional data objects are integrated between APO and ECC? How many integration models exist for which transactional data and whether these modesl are active?

Queues are usually generated in CIF to reflect real-time transactional data situation in both systems. Any new planned orders or purchase orders generated in ECC are passed to APO and vice-versa if the integration model is active.

Thanks,

Jagjeet.

[Former Member · Accepted solution]

Hello Jagjit,

Here are the answers: -

1.    What all modules are you using in SCM? DP, SNP, PPDS, GATP, etc?

Answer: - We use DP & GATP only

2. Which products (e.g. FGs, SFGs, etc.) are planned in APO and which products are planned in ECC? Specifically out of all materials that are planned by business, how many of such materials have MRP Type X0 set-up for them?

Answer: - No materials have “X0” (APO planning material) MRP type in ECC

3. Does your MRP run use net change planning (NETCH) or regenerative planning (NEUPL)?

Answer: - NETCH

4. How is your transactional data integration between APO and ECC? Is it real-time or periodic? If it is real-time then you can perhaps look at making it periodic, however, there are quite a few things that should be carefully considered before this option is chosen.

Answer: - Real-time transactions documents are, Sales orders & Purchase Orders /STO, rest are transferred via integration model jobs.

5. Which transactional data objects are integrated between APO and ECC? How many integration models exist for which transactional data and whether these modesl are active?

Answer: - Yes, they all are active  for Sales order, Purchase order, Purchase Requisitions,  Planned Independent Requirements, Storage Location stock, transit stock, planned orders selected in the integration model. 

Queues are usually generated in CIF to reflect real-time transactional data situation in both systems. Any new planned orders or purchase orders generated in ECC are passed to APO and vice-versa if the integration model is active.

Hope this helps..

Regards

Rahul Chitte

[Former Member · Accepted solution]

Hello Rahul,

You mentioned that you are using GATP in APO along with DP. This can generate queues if you are using incorrect requirements class for sales order items. Do you have a MTS or MTO scenario? In MTO scenario, a planned order needs to be immediately generated after an availability check finds a shortage situation. MRP run calculates net requirements which is basically matching demand with existing receipts in an MTO scenario, this can lead to queues being generated between ECC and SCM to reflect the current availability situation in both systems, especially for GATP. A step-by-step approach to resolve this issue should be:

1. Analyze the queues in SMQ1, SMQ2 and /SAPAPO/CQ and find out which master (less likely) or transactional data objects (more likely) are causing bulk of these queues - Eg. planned orders, STOs, forecast, stock, etc.

2. Switch off the integration model for the above mentioned transactional data object and find out if the number of queues reduce significantly when you run MRP again.

3. If yes, then analyse the problem further focussing on this transactional data object to find out the root cause.

4. You may want to compare the availability situation between ECC and APO to help you with step 3 above.

5. If no, then move to another transactional data object which is causing significant number of queues and switch off integration model for this object and run MRP again to see the results.

6. You may also want to check the ATP configuration in ECC, especially the requirements types and requirements classes.

7. Find out which planning strategies are being used for planning products that are planned as part of MRP, whether they are custom or standard and whether they have appropriate requirements type and requirements classes assigned to them, if you are using custom strategies.

I hope you find it helpful.

BTW - you marked your own answer to this question as helpful.

Thank you,

Regards,

Jagjeet.