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OLI0IMRCCUST - Make System Settings for Measuring Points and Measurement Documents

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Allows you to define global settings for measuring points.

In this IMG activity you can make global system settings for measuring points, counters, and measurement documents. At the moment, there is only one system setting in this IMG activity:

• Generation of interval documents for the counter reading transfer

This is an optional activity that is only required in rare cases. You can also make the system settings at a later date.

A commercial aircraft is mapped in the SAP system as a hierarchical structure of technical objects ( functional locations and equipment). It contains approx. 2500 pieces of equipment, which are individually maintained using a maintenance plans based on counter readings. These counters are assigned to every piece of equipment:

• Flight hours

• Number of starts and landings

While using the counter reading transfer, it is sufficient to enter the counter readings just once for each aircraft (for each tail number). The system then calculates the difference from the last entry and automatically communicates this difference (and correspondingly, the object structure) to all the lower-level functional locations and pieces of equipment.

This simple counter reading transfer is directly activated at the receiving measuring points and counters. You do not need any special system setting for this.

Depending on the frequency of the entries, each aircraft has a daily tally of 5000 or more measurement documents. For a normal stock of 50 to 500 aircrafts, this gives rise to a mass of documents that can barely (or not at all) be managed by the current database. The high volume of documents is because the counter reading transfer for every counter reading at the highest level generates a single document for every counter at the lower levels.

The most recent counter reading is relevant for the maintenance plan scheduling. So, an option was created to accumulate the counter readings from the lower levels into interval documents. This means that the same measurement document is used as long as the equipment is installed at the same functional location or main equipment. Thus, there is only one measurement document for each installation interval of a piece of equipment. This gives rise to the name "interval document".

For individual measuring point or counter, this global system setting only has one default character. You can further set individual measuring points or counters such that the counter reading transfers are mapped in single documents.

If you have already used the simple counter reading transfer before Release 4.6, please see SAP note 428786.

Otherwise, you can activate the interval documents at any time.

Resetting the system settings for interval documents is quite difficult during operations because the system setting has to be considered for the performance optimization of many programs. It can only be reset after all the interval documents have been archived and the counter reading transfer to all measuring points or counters has been reset to single documents.

Using interval documents gives rise to the following restrictions:

• The standard list for measurement documents (transaction IK17) can no longer display detailed single values for lower-level measuring points or counters, as there are no more single documents. This also applies to the corresponding graphics.
  
  However, the system can list the corresponding source documents for each interval document. It can also calculate the virtual counter reading for a particular measuring point or counter for any reference time point.

• Archiving the measurement documents must take place on uniform key days across the system. Before archiving, the interval documents must be split using the program RIARCMR1 for the respective key day. For further information, see SAP note 431536.

• If you use the customer exit IMRC0001 or the corresponding Business Transaction Event PM000040_E, you must, if necessary, adapt your implementation to the logic of the interval documents.

The interval documents are not activated in the standard system. If the creation of individual documents occupies space, you can activate this and choose to create interval documents.

You need to activate the setting to enable the generation of interval documents during measurement reading transfer.

At the time of activation, if the measuring points or counters already exist in your system, you can use the program RIMRCINT to convert these to interval documents. A merging of pre-existing single documents into interval documents is neither necessary nor intended.

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Length: 5680 Date: 20240524 Time: 010849     sap01-206 ( 116 ms )