FIELD SELECTION KEY

Question

Hi,
       I have a query regarding Field Selection Key.
I want to know the difference between Field Selection Keys AKTH, ME21, and ME21N.
I have observed during Testing that, AKTH and ME21N are almost the same.
But, I like to know the difference.
Which is to be used when?
Please give suitable suggestions in this regard.
Thanks in advance.
Thanks & Regards,
Srinivasa M.S
[phone]

Answer 1

Hi,
Go through following information.
Field selection key: -
You should not delete the field selection keys listed below, which the dialog program uses for control purposes, otherwise the dialog may terminate during processing:
1. Field selection key: transaction
The field selection key that corresponds to the transaction code: for example, field selection key ME22 for the transaction "Change Purchase Order". For the Enjoy Purchase Order transactions (creating, changing, displaying), there is only field selection key ME21N.
2. Field selection key: activity type
Is set from the activity type as follows:
AKTH    In creation mode
AKTV    In change mode
AKTA    In display mode
AKTE    With PO extension
You should note that you can also add items in change mode (for example, transaction ME22). Field selection key AKTH would be used for this item.
3. Field selection key: purchasing document type
The field selection key that you have assigned to the document type for the purchasing document. For example, field selection key UBF is assigned to document type UB, which is used for stock transfer orders (within a company code). In this key, the fields Price and Price unit are suppressed.
4. Field selection key: item category/document category
This is determined from the item and document categories as follows: The first two characters consist of the letters 'PT', the third character of the item category (internal representation), and the fourth of the document category:
A   for RFQs,
B   for purchase requisitions
F   for purchase orders
K   for contracts
L   for scheduling agreements
Accordingly, field selection key PT3F would be used for a subcontracting item in a purchase order.
Field selection key: function authorization/release status
Purchasing documents: Used for authorization control. If the user parameter EFB (function authorizations in Purchasing) has been assigned and a field selection key has been assigned to the relevant value, this field selection key is used. Otherwise, field selection key $$$$ is used if the user has insufficient authorization to display prices.
Purchase requisitions: If the purchase requisition is subject to a release strategy and a field selection key has been assigned to the current release indicator, this field selection key is used.
Field selection key: subitem/creation indicator
Purchasing documents: Is only used in the case of subitems. The field selection key is put together in the same way as for the item categories (field selection key 4), with the string 'UP', the subitem category, and the document type.
Purchase requisitions: the field selection key that is derived from the creation indicator in the purchase requisition, that is, ESTV, ESTF, or ESTD, is used in the case of purchase requisitions generated from within Sales and Distribution, from a production order, or through direct procurement.
5. Field selection key: purchase requisition
In addition to the available field selection keys, you can define a field selection key at function authorization level to influence the input characteristics of fields in the Enjoy Purchase Requisition.
You can use this field selection key to set up groups of users that have certain restrictions when editing purchase requisitions.
SAP Recommendation: -
SAP recommends that you accept the settings defined in the standard system. In this case, no action is required on your part.