Нашел в хэлпе порядок определения вида потребности: 1. First, an attempt is made to find a requirements type using the strategy group in the material master. 2. If the strategy group has not been maintained, the system will determine it using the MRP group. 3. If the MRP group has not been defined, the system uses the material type instead of the MRP group when accessing the corresponding control tables. 4. If no requirements type is found here, the system assumes a special rule and attempts to find a requirements type with the aid of the item category and the MRP type. 5. If this is not possible, a last attempt is made to find a requirements type with the item category only. 6. If the last attempt fails, the system declares the transaction as not relevant for the availability check or transfer of requirements.
Но мне эта информация не сильно помогла, потому что у меня для материалов в двух разных заказах одна и та же группа ППМ, но все равно правило проверки выбирается разное.
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