Validity check is called frequently for distribution model

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Symptom
You use an ALE interface to generate and send IDocs. If you use a very complex distribution model (transaction DB64) with a large number of recipients and filter conditions, you will benefit from reducing the number of calls for reading the distribution model.
Other terms
Performance, TBD06, MMODEL_INT_VALID_GET, BMODEL_INT_VALID_GET, ALE_MODEL_INFO_GET
Reason and Prerequisites
The distribution model is [...]

Addr Communication cannot be add/modify for future validity

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Symptom
Address communication data cannot be add/modify for the future validity.
Other terms
BAS_communication, AM 892, Internal error,
ADTEL
ADDR_COMM_MAINTAIN
Reason and Prerequisites
When trying to add or modify communication data (telephone, mobile…)
internal error is thrown.
Solution
Program error. Please apply the corrections.