Error on "Strategy Communication Determination" - Netweaver

Question

I'm trying to create some types of Communication Strategies and below this structure some Communication types. This customization is for the types of messages the buyer can choose when a Purchase Document is save.
When I create a "Position" on the Type of Communication and the Communication Method the system won't allow me to save the customization, generating the error message:
Enter numeric values only

Answer 1

It may be that only the current call has failed, while the connectivity in general is set up correctly. This may be for example, if the maximum number of concurrent connections for the Portal is reached at the moment.
For that reason, please wait a few moments or minutes, and try again to see whether the operation can be performed then.
In most cases, however, the connectivity is not properly configured, so the call will not return a result also during the second and all following tries.
In that case please ask your system administrator to set up the ABAP->JAVA and JAVA->ABAP connectivity in a valid wayand check below OSS note for setting up the config.
Note 917950 - SAP NetWeaver 2004s: Setting Up BEx Web
Hope it Helps
Chetan
@CP..