SAP Message AO713 - Selected set of appropriation requests cannot be planned simultaneously

Diagnosis
The selection criteria you entered lead to the selection ofappropriation requests that are assigned to different appropriationrequest types. It is only possible to plan appropriation requeststogether in the overview if their planning profiles are maintainedcorrectly, and if they have the same settings for currency scaling andthe number of allowed decimal places.

System Response
The selected group of appropriation requests cannot be plannedsimultaneously.

Procedure
Check if their planning profiles are complete, and see if these are thesame.
If it is your intention for them to have different settings forcurrency scaling and number of decimal places, you should use theappropiation request type as an additional selection criteria.