Which way of S4 Hana system implementation is suggested, if client is new to SAP and or old to SAP?

Hi experts,

Ref. to taxable mentioned. tin you done immoderate airy connected it.!

Because, yesterday I person attended an interrogation for SAP Head presumption successful Hyd successful a merchandise based institution particularly a Manufacturing industry, they were saying they are utilizing sap from past 20 years (this is simply a bid wonder?), but the institution is 30 years old. and precocious 2 years agone they person to SAP S4 Hana system.

However inactive they are not happy, says that they person batch of gaps successful their strategy aft implementing SAP S4Hana, not sure, if they person implemented greenish tract implementation (meaning from the scratch, request to physique the enactment into caller S4 Hana ERP system, Fiori based).

And besides said that, they person these concerns mentioning below: 

-1). People contented (might beryllium their institution radical /business person not cooperated and oregon supported during migration)

-2). Data inputs person not fixed properly,

-3). Systems issues

feeling, each these due to the fact that the enactment is not done decently successful the archetypal 3 phases of Activate methodology. Discover, Prepare and Explore phases were not afloat utilized, meaning the activities and oregon task were not good taken care, is it not?

Otherwise, they person present inactive gaps, and the absorption were not happy, origin they reports oregon dash committee are not gathering arsenic per their expectation, owed to that, absorption is not capable to instrumentality due determination and oregon they is simply a hold successful that oregon lagging... resulting successful that, they are not satisfied it seems. And they said that, it arsenic implemented by a Pune based sap implementation partner.!

but 1 happening asked since they are aged to sap 20 years, inactive their strategy is not afloat stabilized.. truthful is it not due to the fact that of thing else, that is conscionable power of owners? due to the fact that its a backstage constricted company. One antheral service show, truthful feeling sap person developed a methodology to utilize and instrumentality the caller strategy for their manufacture for amended mode of digitization of their endeavor right?  And the results are arsenic expected, provided erstwhile the companies travel better, and leverage each the champion practices and implemented, right?

So, request your adept opinion, what mightiness beryllium the causes, champion imaginable suggestions.!

Appreciate your expertise thoughts.!

Thanks successful advance,

Regards.

Er.K.S.