3037322 - Error 06532 Item categories in agreement and requisition incompatible

User is unable to create a purchase requisition with reference to the purchase contract with unknown material/Freetext

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SAP S/4HANA Cloud Public Edition - All versions

Prequisite: You have created the purchase contract with the item category M or W then

1. App: Create Purchase Requisistion - Advanced
2. Adopt Purchase Contract or fill in the Agreement field in the items line and Enter and the Document type is NB
3. Fill other required fields and click on check

Error:  Item categories in agreement and requisition incompatible

If the allowed combination of Item Category between the contract and the Document type of the Purchase Requisition are not maintained then this leads to the given error.

At the Purchase Contract level,  If you do not know the material then the supported Item category for such a scenario is M or W in the contract item.

At the purchase requisition level, the document type provided in the delivered content is RV 'Outl. Agmt Requisn'
To be able to create PR with such a 'Material Group' reference contract you would need to use PR type NB
to enter the reference contract or utilise the source determination functionality

To create a Purchase Requisition with a Material ID having the same Material Group as the reference contract.
You can enable the combination in the SSCUI 106325 'Define Document Types for Contracts' 
Example below: MK contract Type, Item category 'M' linked to PR type NB 

Item categories in agreement and requisition incompatible, freetext material, unknown material/Freetext of purchase contract 06532, LMEQRF3Y FORM VERTRAEGE, LMEQRF0N FORM      CHECK_T161A, SSCUI 101602, entry aids for items without material master, T023. , KBA , MM-PUR-PO , Purchase Orders , Problem