Poland's ruling Communist Party Politburo today criticized resolutions passed by old-guard Communist Party members alleging lack of vigilance at the top in the face of mounting "counterrevolutionary" activity.

The Politburo's stand, which was reported by the official news media, came just a day after Moscow gave extensive coverage to a document criticizing the present Poland leadership for political and ideological errors. The document, issued by conservation party members in the southern provine of Katowice, was apparently designed to discredit the moderate course steered by Communist Party leader Stanislaw Kania and the prime minister, Gen. Wojciech Jaruzelski.

Since it was originally drafted two weeks ago by the group calling itself the "Katowice Party Forum," the document has been sharply attacked by the press and many grass-roots Communist Party cells. But this is the first time the Politburo itself, as Poland's highest decision-making body, has taken a stand on the issue.

A statement to Polish journalists today said the Politburo felt that diverse views within the party were "a positive phenomenon so long as they do not break party unity."

The statement added: "The Katowice forum does not serve the unity of the party.Under present circumstances, it can be harmful." Earlier local party organizations described the Katowice meeting as "a political provocation" intended to unleash new conflicts during a crucial election campaign before the party congress in July.

Leading reformers in the party have privately described the analysis of the Polish crisis presented at the forum as virtually a justification for Soviet military interention here.

Resolution issued by the forum at its inaugural meeting in mid-May accused the present leadership of "a passive attitude" in the face of counterrevolution in Poland.The document said that the mass media had been taken over by anticommunist forces and that every day saw the advance of "liberal-bourgeois and Trotskyist-Zionist outlooks accompanied by a rise of nationalism, clericalism . . . and anti-Soviet views and moods, which are carefully cultivated by the right-wing."

The document accused "revisionists" within the party of aligning themselves with "antisocialist elements" in the independent Solidarity trade union federation in an attempt to demoralize the security services and split the party itself.

Later a second meeting of forum was held, attended by around 200 Communist Party members. Some of them attacked Kania, describing him as "unfit for the post of first secretary of the party."

Although the names of some of the leading organizers of the forum are now coming to light, it is still unclear who is behind it. Like the discussion groups organized by reformist party members that have sprung up over the last few months, it has no official status and is not directly linked to any recognized party organization.

The Katowice party has officially disassociated itself from the forum. Its disavowal, however, was couched in lukewarm terms suggesting that it agree with many of its criticisms.

As the bulwark of Edward Gierek's now discredited government, the regional party organization in Katowice has long been regarded as one of the most conservative in Poland. Its present leader, Andrzej Zabinski, is identified with the hard-line faction within the Politburo.

The body responsible for drafting the forum's resolutions was headed by a miner from the Katowice region, Gerard Gabrys, who was one of two workers elected to the 11-man Politburo last month. But political sources in Warsaw say that he is not directly responsible for its contents.

The party rank-and-file, however, is bound to associate both Zabinski and Gabrys with the forum. Given the present reformist direction taken by the party, this in turn could reduce their already slim chances of reelection to the leadership after the congress.