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Why is the GR Date in SAP WM Quant empty?

Source: http://blog.itpub.net/29829936/viewspace-2128214/

After the inventory is initialized, it is found that the GR Date of some Quant under 998 storage type is empty. The following figure shows the quant in the yellow part:

Normally, when the inventory is imported, the inventory at the IM level will be imported first. After the inventory is imported, at the WM level, the inventory will enter the storage type of 998, and the date of the inventory import will be regarded as the GR Date of the WM level quant. For each quant in 998, its GR Date should have a value.

If the inventory data is not prepared accurately, for example, the IM level is self-owned inventory, while the WM level turns it into supplier consignment inventory, then after the inventory at the WM level is imported, the system will form a negative inventory at the 998 storage type at the WM level. These negative inventory GR Date are empty because there are no material posting documents at the IM level.

The consequence of these quant without GR Date is that there is no way to exit the library according to FIFO in the subsequent time of exiting the library, and there will even be an error that source storage bin can not be found. Even if we use the LS22 transaction code, it won't help to make up the GR date of the relevant quant.

The above are all the problems and puzzles encountered by the author in the project, which are specially recorded and summarized.

2016-11-10 is written in Jingkai District, Wuhan City.

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